CVE-2024-21539: Regular Expression Denial of Service (ReDoS) in @eslint/plugin-kit
A Regular Expression Denial of Service (ReDoS) vulnerability exists in versions of the @eslint/plugin-kit package before 0.2.3. This issue arises from improper input sanitization in the package's regular expression handling, allowing an attacker to cause excessive CPU usage and potentially crash the program. The vulnerability has a high severity rating with a CVSS score of 8.7. No official patch or remediation has been confirmed at this time.
AI Analysis
Technical Summary
CVE-2024-21539 identifies a ReDoS vulnerability in @eslint/plugin-kit versions prior to 0.2.3. The vulnerability is due to improper input sanitization in regular expressions, which can be exploited by an attacker to increase CPU consumption and crash the affected application. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges or user interaction required, and high impact on availability. No vendor advisory or patch information is currently available, and no known exploits in the wild have been reported.
Potential Impact
Exploitation of this vulnerability can lead to denial of service by causing high CPU usage and crashing the application using the vulnerable @eslint/plugin-kit versions. This can disrupt services relying on the package, impacting availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider limiting exposure to untrusted input that might trigger the vulnerable regular expressions or use alternative versions or packages if feasible.
CVE-2024-21539: Regular Expression Denial of Service (ReDoS) in @eslint/plugin-kit
Description
A Regular Expression Denial of Service (ReDoS) vulnerability exists in versions of the @eslint/plugin-kit package before 0.2.3. This issue arises from improper input sanitization in the package's regular expression handling, allowing an attacker to cause excessive CPU usage and potentially crash the program. The vulnerability has a high severity rating with a CVSS score of 8.7. No official patch or remediation has been confirmed at this time.
CVSS v4.0
Score 8.7high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-21539 identifies a ReDoS vulnerability in @eslint/plugin-kit versions prior to 0.2.3. The vulnerability is due to improper input sanitization in regular expressions, which can be exploited by an attacker to increase CPU consumption and crash the affected application. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges or user interaction required, and high impact on availability. No vendor advisory or patch information is currently available, and no known exploits in the wild have been reported.
Potential Impact
Exploitation of this vulnerability can lead to denial of service by causing high CPU usage and crashing the application using the vulnerable @eslint/plugin-kit versions. This can disrupt services relying on the package, impacting availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider limiting exposure to untrusted input that might trigger the vulnerable regular expressions or use alternative versions or packages if feasible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- snyk
- Date Reserved
- 2023-12-22T12:33:20.123Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a70b4e4bf32cb7a34cc8d2a
Added to database: 08/03/2026, 15:33:56 UTC
Last enriched: 08/03/2026, 15:47:54 UTC
Last updated: 08/03/2026, 15:52:17 UTC
Views: 4
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