Common Weakness Enumeration

CWE-77

Allowed-with-Review

Improper Neutralization of Special Elements used in a Command ('Command Injection')

Abstraction: Class · Status: Draft

The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

5416 vulnerabilities reference this CWE, most recent first.

GHSA-573W-FMHG-VXQ2

Vulnerability from github – Published: 2026-01-07 18:30 – Updated: 2026-01-07 18:30
VLAI
Details

A command injection vulnerability in the shell_exec function of sonirico mcp-shell v0.3.1 allows attackers to execute arbitrary commands via supplying a crafted command string.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-61489"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-07T17:16:00Z",
    "severity": "MODERATE"
  },
  "details": "A command injection vulnerability in the shell_exec function of sonirico mcp-shell v0.3.1 allows attackers to execute arbitrary commands via supplying a crafted command string.",
  "id": "GHSA-573w-fmhg-vxq2",
  "modified": "2026-01-07T18:30:25Z",
  "published": "2026-01-07T18:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-61489"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sonirico/mcp-shell/issues/4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sonirico/mcp-shell"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-574V-3XXH-GWH5

Vulnerability from github – Published: 2022-03-11 00:02 – Updated: 2022-03-17 00:01
VLAI
Details

TP-Link Tapo C200 IP camera, on its 1.1.15 firmware version and below, is affected by an unauthenticated RCE vulnerability, present in the uhttpd binary running by default as root. The exploitation of this vulnerability allows an attacker to take full control of the camera.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2021-4045"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-03-10T17:44:00Z",
    "severity": "CRITICAL"
  },
  "details": "TP-Link Tapo C200 IP camera, on its 1.1.15 firmware version and below, is affected by an unauthenticated RCE vulnerability, present in the uhttpd binary running by default as root. The exploitation of this vulnerability allows an attacker to take full control of the camera.",
  "id": "GHSA-574v-3xxh-gwh5",
  "modified": "2022-03-17T00:01:39Z",
  "published": "2022-03-11T00:02:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4045"
    },
    {
      "type": "WEB",
      "url": "https://www.incibe-cert.es/en/early-warning/security-advisories/tp-link-tapo-c200-remote-code-execution-vulnerability"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/168472/TP-Link-Tapo-c200-1.1.15-Remote-Code-Execution.html"
    }
  ],
  "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-5795-893F-FHQM

Vulnerability from github – Published: 2023-12-01 03:30 – Updated: 2023-12-06 21:30
VLAI
Details

An issue in TOTOLINK X6000R V9.4.0cu.652_B20230116 and V9.4.0cu.852_B20230719 allows a remote attacker to execute arbitrary code via the hostName parameter of the switchOpMode component.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-43454"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-12-01T02:15:07Z",
    "severity": "CRITICAL"
  },
  "details": "An issue in TOTOLINK X6000R V9.4.0cu.652_B20230116 and V9.4.0cu.852_B20230719 allows a remote attacker to execute arbitrary code via the hostName parameter of the switchOpMode component.",
  "id": "GHSA-5795-893f-fhqm",
  "modified": "2023-12-06T21:30:58Z",
  "published": "2023-12-01T03:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-43454"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tharsis1024/vuln/blob/main/TOTOLINK/X6000R/1.md"
    }
  ],
  "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-57FH-76PF-JQR3

Vulnerability from github – Published: 2024-05-22 12:32 – Updated: 2025-10-14 21:30
VLAI
Details

A vulnerability was found in Arris VAP2500 08.50. It has been rated as critical. Affected by this issue is some unknown functionality of the file /diag_s.php. The manipulation of the argument customer_info leads to command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-265832.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2024-5195"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-22T11:15:54Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability was found in Arris VAP2500 08.50. It has been rated as critical. Affected by this issue is some unknown functionality of the file /diag_s.php. The manipulation of the argument customer_info leads to command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-265832.",
  "id": "GHSA-57fh-76pf-jqr3",
  "modified": "2025-10-14T21:30:23Z",
  "published": "2024-05-22T12:32:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-5195"
    },
    {
      "type": "WEB",
      "url": "https://github.com/h0e4a0r1t/h0e4a0r1t.github.io/blob/master/2024/a%2B%26%5BE4%3Flp5%3Fk9_%3D%5D/ARRIS_VAP2500-RCE-diag_s.php.pdf"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.265832"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.265832"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.335253"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/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"
    }
  ]
}

GHSA-57FV-V3PR-F2XC

Vulnerability from github – Published: 2022-11-23 18:30 – Updated: 2022-11-26 06:31
VLAI
Details

TOTOLINK NR1800X V9.1.0u.6279_B20210910 contains a command injection via the FileName parameter in the UploadFirmwareFile function.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-44249"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77",
      "CWE-78"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-11-23T16:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "TOTOLINK NR1800X V9.1.0u.6279_B20210910 contains a command injection via the FileName parameter in the UploadFirmwareFile function.",
  "id": "GHSA-57fv-v3pr-f2xc",
  "modified": "2022-11-26T06:31:17Z",
  "published": "2022-11-23T18:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-44249"
    },
    {
      "type": "WEB",
      "url": "https://brief-nymphea-813.notion.site/LR350-command-injection-UploadFirmwareFile-f006f70e9e6540529d262a8d34154d24"
    }
  ],
  "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-57HG-F8MJ-GQRR

Vulnerability from github – Published: 2022-03-24 00:00 – Updated: 2022-03-30 00:00
VLAI
Details

ZZZCMS zzzphp v2.1.0 was discovered to contain a remote command execution (RCE) vulnerability via danger_key() at zzz_template.php.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-23881"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-03-23T21:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "ZZZCMS zzzphp v2.1.0 was discovered to contain a remote command execution (RCE) vulnerability via danger_key() at zzz_template.php.",
  "id": "GHSA-57hg-f8mj-gqrr",
  "modified": "2022-03-30T00:00:50Z",
  "published": "2022-03-24T00:00:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-23881"
    },
    {
      "type": "WEB",
      "url": "https://github.com/metaStor/Vuls/blob/main/zzzcms/zzzphp%20V2.1.0%20RCE/zzzphp%20V2.1.0%20RCE.md"
    }
  ],
  "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-57HX-MRQ2-CCP9

Vulnerability from github – Published: 2025-11-13 21:31 – Updated: 2025-11-14 18:31
VLAI
Details

An unauthenticated command injection vulnerability exists in the D-Link DIR-878A1 router firmware FW101B04.bin. The vulnerability occurs in the 'SetDMZSettings' functionality, where the 'IPAddress' parameter in prog.cgi is stored in NVRAM and later used by librcm.so to construct iptables commands executed via twsystem(). An attacker can exploit this vulnerability remotely without authentication by sending a specially crafted HTTP request, leading to arbitrary command execution on the device.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-60673"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-11-13T19:15:48Z",
    "severity": "MODERATE"
  },
  "details": "An unauthenticated command injection vulnerability exists in the D-Link DIR-878A1 router firmware FW101B04.bin. The vulnerability occurs in the \u0027SetDMZSettings\u0027 functionality, where the \u0027IPAddress\u0027 parameter in prog.cgi is stored in NVRAM and later used by librcm.so to construct iptables commands executed via twsystem(). An attacker can exploit this vulnerability remotely without authentication by sending a specially crafted HTTP request, leading to arbitrary command execution on the device.",
  "id": "GHSA-57hx-mrq2-ccp9",
  "modified": "2025-11-14T18:31:34Z",
  "published": "2025-11-13T21:31:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-60673"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yifan20020708/SGTaint-0-day/blob/main/DLink/DLink-DIR-878/CVE-2025-60673.md"
    },
    {
      "type": "WEB",
      "url": "https://www.dlink.com/en"
    },
    {
      "type": "WEB",
      "url": "https://www.dlink.com/en/security-bulletin"
    },
    {
      "type": "WEB",
      "url": "http://d-link.com"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-57PC-JM9R-HGJ4

Vulnerability from github – Published: 2026-06-04 15:30 – Updated: 2026-06-30 15:30
VLAI
Details

OS Command Injection Remote Code Execution Vulnerability in API in Progress ADC Products allows an un-authenticated attacker to execute arbitrary commands on the LoadMaster appliance by exploiting unsanitized input in multiple command endpoints

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-8037"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-04T14:16:45Z",
    "severity": "CRITICAL"
  },
  "details": "OS Command Injection Remote Code Execution Vulnerability in API in Progress ADC Products allows an un-authenticated attacker to execute arbitrary commands on the LoadMaster appliance by exploiting unsanitized input in multiple command endpoints",
  "id": "GHSA-57pc-jm9r-hgj4",
  "modified": "2026-06-30T15:30:32Z",
  "published": "2026-06-04T15:30:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8037"
    },
    {
      "type": "WEB",
      "url": "https://community.progress.com/s/article/LoadMaster-Critical-Security-Bulletin-June-2026-CVE-2026-8037-CVE-2026-33691"
    },
    {
      "type": "WEB",
      "url": "https://labs.watchtowr.com/enterprise-tech-in-shell-out-progress-kemp-loadmaster-uninitialized-heap-to-pre-auth-rce-cve-2026-8037"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-582P-2FPG-X226

Vulnerability from github – Published: 2023-04-05 18:30 – Updated: 2023-04-06 16:37
VLAI
Summary
Microweber vulnerable to command injection
Details

microweber/microweber prior to 1.3.3 is vulnerable to command injection in the "first name" field. This allows for server-side template injection, which can lead to arbitrary code execution.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "microweber/microweber"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.3.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-1877"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-04-06T16:37:32Z",
    "nvd_published_at": "2023-04-05T17:15:00Z",
    "severity": "MODERATE"
  },
  "details": "microweber/microweber prior to 1.3.3 is vulnerable to command injection in the \"first name\" field. This allows for server-side template injection, which can lead to arbitrary code execution.",
  "id": "GHSA-582p-2fpg-x226",
  "modified": "2023-04-06T16:37:32Z",
  "published": "2023-04-05T18:30:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-1877"
    },
    {
      "type": "WEB",
      "url": "https://github.com/microweber/microweber/commit/93a906d0bf096c3ab1674012a90c88d101e76c8d"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/microweber/microweber"
    },
    {
      "type": "WEB",
      "url": "https://huntr.dev/bounties/71fe4b3b-20ac-448c-8191-7b99d7ffaf55"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Microweber vulnerable to command injection"
}

GHSA-585R-X79P-835G

Vulnerability from github – Published: 2022-05-17 02:49 – Updated: 2022-05-17 02:49
VLAI
Details

setroubleshoot allows local users to bypass an intended container protection mechanism and execute arbitrary commands by (1) triggering an SELinux denial with a crafted file name, which is handled by the _set_tpath function in audit_data.py or via a crafted (2) local_id or (3) analysis_id field in a crafted XML document to the run_fix function in SetroubleshootFixit.py, related to the subprocess.check_output and commands.getstatusoutput functions, a different vulnerability than CVE-2016-4445.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2016-4989"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-04-11T18:59:00Z",
    "severity": "HIGH"
  },
  "details": "setroubleshoot allows local users to bypass an intended container protection mechanism and execute arbitrary commands by (1) triggering an SELinux denial with a crafted file name, which is handled by the _set_tpath function in audit_data.py or via a crafted (2) local_id or (3) analysis_id field in a crafted XML document to the run_fix function in SetroubleshootFixit.py, related to the subprocess.check_output and commands.getstatusoutput functions, a different vulnerability than CVE-2016-4445.",
  "id": "GHSA-585r-x79p-835g",
  "modified": "2022-05-17T02:49:49Z",
  "published": "2022-05-17T02:49:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-4989"
    },
    {
      "type": "WEB",
      "url": "https://github.com/fedora-selinux/setroubleshoot/commit/dda55aa50db95a25f0d919c3a0d5871827cdc40f"
    },
    {
      "type": "WEB",
      "url": "https://github.com/fedora-selinux/setroubleshoot/commit/e69378d7e82a503534d29c5939fa219341e8f2ad"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2016:1293"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1346461"
    },
    {
      "type": "WEB",
      "url": "https://rhn.redhat.com/errata/RHSA-2016-1267.html"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/oss-sec/2016/q2/574"
    },
    {
      "type": "WEB",
      "url": "http://securitytracker.com/id/1036144"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Mitigation
Architecture and Design

If at all possible, use library calls rather than external processes to recreate the desired functionality.

Mitigation
Implementation

If possible, ensure that all external commands called from the program are statically created.

Mitigation MIT-5
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.
Mitigation
Operation

Run time: Run time policy enforcement may be used in an allowlist fashion to prevent use of any non-sanctioned commands.

Mitigation
System Configuration

Assign permissions that prevent the user from accessing/opening privileged files.

CAPEC-136: LDAP Injection

An attacker manipulates or crafts an LDAP query for the purpose of undermining the security of the target. Some applications use user input to create LDAP queries that are processed by an LDAP server. For example, a user might provide their username during authentication and the username might be inserted in an LDAP query during the authentication process. An attacker could use this input to inject additional commands into an LDAP query that could disclose sensitive information. For example, entering a * in the aforementioned query might return information about all users on the system. This attack is very similar to an SQL injection attack in that it manipulates a query to gather additional information or coerce a particular return value.

CAPEC-15: Command Delimiters

An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or denylist input validation, as opposed to allowlist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or denylist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.

CAPEC-183: IMAP/SMTP Command Injection

An adversary exploits weaknesses in input validation on web-mail servers to execute commands on the IMAP/SMTP server. Web-mail servers often sit between the Internet and the IMAP or SMTP mail server. User requests are received by the web-mail servers which then query the back-end mail server for the requested information and return this response to the user. In an IMAP/SMTP command injection attack, mail-server commands are embedded in parts of the request sent to the web-mail server. If the web-mail server fails to adequately sanitize these requests, these commands are then sent to the back-end mail server when it is queried by the web-mail server, where the commands are then executed. This attack can be especially dangerous since administrators may assume that the back-end server is protected against direct Internet access and therefore may not secure it adequately against the execution of malicious commands.

CAPEC-248: Command Injection

An adversary looking to execute a command of their choosing, injects new items into an existing command thus modifying interpretation away from what was intended. Commands in this context are often standalone strings that are interpreted by a downstream component and cause specific responses. This type of attack is possible when untrusted values are used to build these command strings. Weaknesses in input validation or command construction can enable the attack and lead to successful exploitation.

CAPEC-40: Manipulating Writeable Terminal Devices

This attack exploits terminal devices that allow themselves to be written to by other users. The attacker sends command strings to the target terminal device hoping that the target user will hit enter and thereby execute the malicious command with their privileges. The attacker can send the results (such as copying /etc/passwd) to a known directory and collect once the attack has succeeded.

CAPEC-43: Exploiting Multiple Input Interpretation Layers

An attacker supplies the target software with input data that contains sequences of special characters designed to bypass input validation logic. This exploit relies on the target making multiples passes over the input data and processing a "layer" of special characters with each pass. In this manner, the attacker can disguise input that would otherwise be rejected as invalid by concealing it with layers of special/escape characters that are stripped off by subsequent processing steps. The goal is to first discover cases where the input validation layer executes before one or more parsing layers. That is, user input may go through the following logic in an application: <parser1> --> <input validator> --> <parser2>. In such cases, the attacker will need to provide input that will pass through the input validator, but after passing through parser2, will be converted into something that the input validator was supposed to stop.

CAPEC-75: Manipulating Writeable Configuration Files

Generally these are manually edited files that are not in the preview of the system administrators, any ability on the attackers' behalf to modify these files, for example in a CVS repository, gives unauthorized access directly to the application, the same as authorized users.

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.