Common Weakness Enumeration
CWE-23
AllowedRelative Path Traversal
Abstraction: Base · Status: Draft
The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory.
843 vulnerabilities reference this CWE, most recent first.
CVE-2020-25150 (GCVE-0-2020-25150)
Vulnerability from cvelistv5 – Published: 2022-04-14 20:05 – Updated: 2025-04-16 16:30
VLAI
EPSS
VEX
Title
B. Braun SpaceCom, Battery Pack SP with Wi-Fi, and Data module compactplus
Summary
A relative path traversal attack in the B. Braun Melsungen AG SpaceCom Version L81/U61 and earlier, and the Data module compactplus Versions A10 and A11 allows attackers with service user privileges to upload arbitrary files. By uploading a specially crafted tar file an attacker can execute arbitrary commands.
Severity
7.6 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-16 15:54 UTC
CWE
- CWE-23 - Relative Path Traversal
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.cisa.gov/uscert/ics/advisories/icsma-… | x_refsource_CONFIRM |
| https://www.bbraun.com/en/products-and-therapies/… | x_refsource_CONFIRM |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| B. Braun Melsungen AG | SpaceCom |
Affected:
unspecified , ≤ U61
(custom)
Affected: unspecified , ≤ L81 (custom) |
|
| B. Braun Melsungen AG | Battery pack with Wi-Fi |
Affected:
unspecified , ≤ U61
(custom)
Affected: unspecified , ≤ L81 (custom) |
|
| B. Braun Melsungen AG | Data module compactplus |
Affected:
A10
Affected: A11 |
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CVE-2020-17518 (GCVE-0-2020-17518)
Vulnerability from cvelistv5 – Published: 2021-01-05 11:40 – Updated: 2025-02-13 16:27
VLAI
EPSS
VEX
Title
Apache Flink directory traversal attack: remote file writing through the REST API
Summary
Apache Flink 1.5.1 introduced a REST handler that allows you to write an uploaded file to an arbitrary location on the local file system, through a maliciously modified HTTP HEADER. The files can be written to any location accessible by Flink 1.5.1. All users should upgrade to Flink 1.11.3 or 1.12.0 if their Flink instance(s) are exposed. The issue was fixed in commit a5264a6f41524afe8ceadf1d8ddc8c80f323ebc4 from apache/flink:master.
Severity
No CVSS data available.
CWE
- CWE-23 - Relative Path Traversal
Assigner
References
24 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Flink |
Affected:
Apache Flink 1.5.1 to 1.11.2
|
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CVE-2020-12026 (GCVE-0-2020-12026)
Vulnerability from cvelistv5 – Published: 2020-05-08 11:48 – Updated: 2024-08-04 11:48
VLAI
EPSS
VEX
Summary
Advantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. Multiple relative path traversal vulnerabilities exist that may allow a low privilege user to overwrite files outside the application’s control.
Severity
No CVSS data available.
CWE
- CWE-23 - RELATIVE PATH TRAVERSAL CWE-23
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.us-cert.gov/ics/advisories/icsa-20-128-01 | x_refsource_MISC |
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Advantech WebAccess Node |
Affected:
WebAccess Node Version 8.4.4 and prior, WebAccess Node Version 9.0.0
|
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CVE-2020-12010 (GCVE-0-2020-12010)
Vulnerability from cvelistv5 – Published: 2020-05-08 11:40 – Updated: 2024-08-04 11:48
VLAI
EPSS
VEX
Summary
Advantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. Multiple relative path traversal vulnerabilities exist that may allow an authenticated user to use a specially crafted file to delete files outside the application’s control.
Severity
No CVSS data available.
CWE
- CWE-23 - RELATIVE PATH TRAVERSAL CWE-23
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.us-cert.gov/ics/advisories/icsa-20-128-01 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Advantech WebAccess Node |
Affected:
WebAccess Node Version 8.4.4 and prior, WebAccess Node Version 9.0.0
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CVE-2020-12006 (GCVE-0-2020-12006)
Vulnerability from cvelistv5 – Published: 2020-05-08 11:41 – Updated: 2024-08-04 11:48
VLAI
EPSS
VEX
Summary
Advantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. Multiple relative path traversal vulnerabilities exist that may allow a low privilege user to overwrite files outside the application’s control.
Severity
No CVSS data available.
CWE
- CWE-23 - RELATIVE PATH TRAVERSAL CWE-23
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.us-cert.gov/ics/advisories/icsa-20-128-01 | x_refsource_MISC |
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Advantech WebAccess Node |
Affected:
WebAccess Node Version 8.4.4 and prior, WebAccess Node Version 9.0.0
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CVE-2020-10631 (GCVE-0-2020-10631)
Vulnerability from cvelistv5 – Published: 2020-04-09 13:08 – Updated: 2024-08-04 11:06
VLAI
EPSS
VEX
Summary
An attacker could use a specially crafted URL to delete or read files outside the WebAccess/NMS's (versions prior to 3.0.2) control.
Severity
No CVSS data available.
CWE
- CWE-23 - RELATIVE PATH TRAVERSAL CWE-23
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.us-cert.gov/ics/advisories/icsa-20-098-01 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | WebAccess/NMS |
Affected:
Versions prior to 3.0.2
|
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CVE-2020-10619 (GCVE-0-2020-10619)
Vulnerability from cvelistv5 – Published: 2020-04-09 13:13 – Updated: 2024-08-04 11:06
VLAI
EPSS
VEX
Summary
An attacker could use a specially crafted URL to delete files outside the WebAccess/NMS's (versions prior to 3.0.2) control.
Severity
No CVSS data available.
CWE
- CWE-23 - RELATIVE PATH TRAVERSAL CWE-23
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.us-cert.gov/ics/advisories/icsa-20-098-01 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | WebAccess/NMS |
Affected:
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CVE-2020-8865 (GCVE-0-2020-8865)
Vulnerability from cvelistv5 – Published: 2020-03-23 20:15 – Updated: 2024-08-04 10:12
VLAI
EPSS
VEX
Summary
This vulnerability allows remote attackers to execute local PHP files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within edit.php. When parsing the params[template] parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10469.
Severity
6.3 (Medium)
CWE
- CWE-23 - Relative Path Traversal
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-listx_refsource_MLIST |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Horde | Groupware Webmail Edition |
Affected:
5.2.22
|
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CVE-2020-8570 (GCVE-0-2020-8570)
Vulnerability from cvelistv5 – Published: 2021-01-21 17:09 – Updated: 2024-09-16 22:01
VLAI
EPSS
VEX
Title
Kubernetes Java client libraries unvalidated path traversal in Copy implementation
Summary
Kubernetes Java client libraries in version 10.0.0 and versions prior to 9.0.1 allow writes to paths outside of the current directory when copying multiple files from a remote pod which sends a maliciously crafted archive. This can potentially overwrite any files on the system of the process executing the client code.
Severity
No CVSS data available.
CWE
- CWE-23 - Relative Path Traversal
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://groups.google.com/g/kubernetes-security-a… | x_refsource_MISC |
| https://github.com/kubernetes-client/java/issues/1491 | x_refsource_MISC |
| https://lists.apache.org/thread.html/rcafa485d635… | mailing-listx_refsource_MLIST |
| https://lists.apache.org/thread.html/r0c76b3d0be3… | mailing-listx_refsource_MLIST |
| https://lists.apache.org/thread.html/rdb223e1b82e… | mailing-listx_refsource_MLIST |
| https://lists.apache.org/thread.html/r1975078e44d… | mailing-listx_refsource_MLIST |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Kubernetes | Kubernetes Java Client |
Affected:
all versions prior to 9.0
Affected: 9.0 , < 9.0.2 (custom) Affected: 10.0 , < 10.0.1 (custom) |
Date Public
2021-01-11 00:00
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CVE-2020-8271 (GCVE-0-2020-8271)
Vulnerability from cvelistv5 – Published: 2020-11-16 00:32 – Updated: 2024-08-04 09:56
VLAI
EPSS
VEX
Summary
Unauthenticated remote code execution with root privileges in Citrix SD-WAN Center versions before 11.2.2, 11.1.2b and 10.2.8
Severity
No CVSS data available.
CWE
- CWE-23 - Relative Path Traversal (CWE-23)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://support.citrix.com/article/CTX285061 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Citrix SD-WAN Center |
Affected:
Fixed in 11.2.2, 11.1.2b and 10.2.8
|
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}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Relative Path Traversal (CWE-23)"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://support.citrix.com/article/CTX285061",
"refsource": "MISC",
"url": "https://support.citrix.com/article/CTX285061"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
"assignerShortName": "hackerone",
"cveId": "CVE-2020-8271",
"datePublished": "2020-11-16T00:32:58.000Z",
"dateReserved": "2020-01-28T00:00:00.000Z",
"dateUpdated": "2024-08-04T09:56:28.218Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
Mitigation MIT-5.1
Implementation
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-20.1
Implementation
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-29
Operation
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].
CAPEC-139: Relative Path Traversal
An attacker exploits a weakness in input validation on the target by supplying a specially constructed path utilizing dot and slash characters for the purpose of obtaining access to arbitrary files or resources. An attacker modifies a known path on the target in order to reach material that is not available through intended channels. These attacks normally involve adding additional path separators (/ or \) and/or dots (.), or encodings thereof, in various combinations in order to reach parent directories or entirely separate trees of the target's directory structure.
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.