Common Weakness Enumeration

CWE-624

Allowed

Executable Regular Expression Error

Abstraction: Base · Status: Incomplete

API response cwe.mitre.org

The product uses a regular expression that either (1) contains an executable component with user-controlled inputs, or (2) allows a user to enable execution by inserting pattern modifiers.

3 vulnerabilities reference this CWE, most recent first.

CVE-2026-25237 (GCVE-0-2026-25237)

Vulnerability from cvelistv5 – Published: 2026-02-03 18:29 – Updated: 2026-02-04 20:21
VLAI
Title
PEAR is Vulnerable to PHP Code Execution via preg_replace /e in Bug Update Emails
Summary
PEAR is a framework and distribution system for reusable PHP components. Prior to version 1.33.0, use of preg_replace() with the /e modifier in bug update email handling can enable PHP code execution if attacker-controlled content reaches the evaluated replacement. This issue has been patched in version 1.33.0.
Severity
9.2 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-624 - Executable Regular Expression Error
Assigner
References
Impacted products
Vendor Product Version
pear pearweb Affected: < 1.33.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2024-41655 (GCVE-0-2024-41655)

Vulnerability from cvelistv5 – Published: 2024-07-23 14:49 – Updated: 2024-08-02 04:46
VLAI
Title
TF2 Item Format Regular Expression Denial of Service vulnerability
Summary
TF2 Item Format helps users format TF2 items to the community standards. Versions of `tf2-item-format` since at least `4.2.6` and prior to `5.9.14` are vulnerable to a Regular Expression Denial of Service (ReDoS) attack when parsing crafted user input. This vulnerability can be exploited by an attacker to perform DoS attacks on any service that uses any `tf2-item-format` to parse user input. Version `5.9.14` contains a fix for the issue.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-624 - Executable Regular Expression Error
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
danocmx node-tf2-item-format Affected: >= 4.2.6, < 5.9.14
Create a notification for this product.
danocmx node-tf2-item-format Affected: 4.2.6 , < 5.9.14 (custom)
    cpe:2.3:a:danocmx:node-tf2-item-format:*:*:*:*:*:*:*:*
 Create a notification for this product.
Show details on NVD website
To clipboard 

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GHSA-8H55-Q5QQ-P685

Vulnerability from github – Published: 2024-07-23 14:10 – Updated: 2024-07-23 15:51
VLAI
Summary
(ReDoS) Regular Expression Denial of Service in tf2-item-format
Details

Summary

Versions of tf2-item-format since at least 4.2.6 are vulnerable to a Regular Expression Denial of Service (ReDoS) attack when parsing crafted user input.

Tested Versions

  • 5.9.13
  • 5.8.10
  • 5.7.0
  • 5.6.17
  • 4.3.5
  • 4.2.6

v5

Upgrade package to ^5.9.14

v4

No patch exists. Please consult the v4 to v5 migration guide to upgrade to v5.

If upgrading to v5 is not possible, fork the module repository and implement the fix detailed below.

Impact

This vulnerability can be exploited by an attacker to perform DoS attacks on any service that uses any tf2-item-format to parse user input.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

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        "last_known_affected_version_range": "\u003c= 5.9.13"
      },
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            },
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            }
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  "aliases": [
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  "details": "## Summary\n\nVersions of `tf2-item-format` since at least `4.2.6` are vulnerable to a Regular Expression Denial of Service (ReDoS) attack when parsing crafted user input. \n\n## Tested Versions\n\n- `5.9.13`\n- `5.8.10`\n- `5.7.0`\n- `5.6.17`\n- `4.3.5`\n- `4.2.6`\n\n### v5\nUpgrade package to `^5.9.14`\n\n### v4\nNo patch exists. Please consult the [v4 to v5 migration guide](https://github.com/danocmx/node-tf2-item-format?tab=readme-ov-file#migrating-from-v4-to-v5) to upgrade to v5.\n\nIf upgrading to v5 is not possible, fork the module repository and implement the fix detailed below.\n\n## Impact\n\nThis vulnerability can be exploited by an attacker to perform DoS attacks on any service that uses any `tf2-item-format` to parse user input.",
  "id": "GHSA-8h55-q5qq-p685",
  "modified": "2024-07-23T15:51:54Z",
  "published": "2024-07-23T14:10:45Z",
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    },
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      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-41655"
    },
    {
      "type": "WEB",
      "url": "https://github.com/danocmx/node-tf2-item-format/commit/5cffcc16a9261d6a937bda72bfe6830e02e31eec"
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      "type": "PACKAGE",
      "url": "https://github.com/danocmx/node-tf2-item-format"
    },
    {
      "type": "WEB",
      "url": "https://github.com/danocmx/node-tf2-item-format/releases/tag/v5.9.14"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "(ReDoS) Regular Expression Denial of Service in tf2-item-format"
}
Mitigation
Implementation

The regular expression feature in some languages allows inputs to be quoted or escaped before insertion, such as \Q and \E in Perl.

No CAPEC attack patterns related to this CWE.

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