Regular expression denial of service in @eslint/plugin-kit
Priority HIGH 77CWE-1333Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-1333.
Summary
Versions of the package @eslint/plugin-kit before 0.2.3 are vulnerable to Regular Expression Denial of Service (ReDoS) due to improper input sanitization. An attacker can increase the CPU usage and crash the program by exploiting this vulnerability.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00507 43rd percentileScored 2026-11-07
Fix Fixed @eslint/plugin-kit: 0.2.3@eslint/plugin-kit (npm): 0.2.3
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | @eslint/plugin-kit | before 0.2.3 | 0.2.3 | Patch available | CNA |
| — | @eslint/plugin-kit (npm) | before 0.2.3 | 0.2.3 | Patch available | GHSA-7q7g-4xm8-89cq |
- @eslint/plugin-kit Vendor— Affected before 0.2.3 Fixed in 0.2.3 Patch available CNA
- @eslint/plugin-kit (npm) Vendor— Affected before 0.2.3 Fixed in 0.2.3 Patch available GHSA-7q7g-4xm8-89cq
CPE names CISA-ADP · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:eslint:rewrite:*:*:*:*:*:*:*:* | — | — | — |
- cpe:2.3:a:eslint:rewrite:*:*:*:*:*:*:*:* Versions — — ·—
Remediation
- Fix · CNA @eslint/plugin-kit Fixed in 0.2.3
- Fix · GHSA-7q7g-4xm8-89cq @eslint/plugin-kit (npm) Fixed in 0.2.3 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2024-21539
- 2026-10-03 Alias added: GHSA-7q7g-4xm8-89cq
References
Sources
- CVE-2024-21539 · CVE Program
- CVE-2024-21539 · NVD
- FIRST EPSS
- GHSA-7q7g-4xm8-89cq · GitHub Advisory Database · CC BY 4.0
- CVE-2024-21539 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences