The semver package before 4.3.2 for Node.js allows attackers to cause a denial of service…
Priority MEDIUM 43CWE-399Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-399 and the CVSS impact.
Summary
The semver package before 4.3.2 for Node.js allows attackers to cause a denial of service (CPU consumption) via a long version string, aka a "regular expression denial of service (ReDoS)."
Why it matters now
EPSS 0.06887 94th percentileScored 2026-11-07
Fix Partial semver (npm): 4.3.2Red Hat: 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | semver (npm) | 1.0.4 to before 4.3.2 | 4.3.2 | Patch available | GHSA-x6fg-f45m-jf5q |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- semver (npm) Vendor— Affected 1.0.4 to before 4.3.2 Fixed in 4.3.2 Patch available GHSA-x6fg-f45m-jf5q
Remediation
- Fix · GHSA-x6fg-f45m-jf5q semver (npm) Fixed in 4.3.2 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Software Collections | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2015-8855
- 2026-10-03 Alias added: GHSA-x6fg-f45m-jf5q
References
Advisory 3
Other 6
- https://github.com/github/advisory-database/pull/7102
- https://github.com/npm/node-semver/commit/5c4c9f6e26c7052a42b5ced2a7481c5c9b4363a0
- https://github.com/npm/node-semver/commit/c80180d8341a8ada0236815c29a2be59864afd70
- https://github.com/npm/node-semver
- https://www.npmjs.com/advisories/31
- https://www.owasp.org/index.php/Regular_expression_Denial_of_Service_-_ReDoS
More NodeJS Node.js vulnerabilities
- TI-2026-79288 Out-of-bounds write in Google Brotli decoder KEVCVSS 4.0CRITICAL 9.2
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2016-01993 The DES and Triple DES ciphers, as used in the TLS, SSH, and IPSec protocols and other… CVSS 3.1HIGH 7.5
- TI-2024-03325 Command injection vulnerability in programing languages on Microsoft Windows operating system. CVSS 3.1CRITICAL 9.8
- TI-2022-03472 X.509 Email Address Variable Length Buffer Overflow CVSS 3.1HIGH 7.5
- TI-2022-03315 X.509 Email Address 4-byte Buffer Overflow CVSS 3.1HIGH 7.5
Sources
- CVE-2015-8855 · CVE Program
- CVE-2015-8855 · NVD
- FIRST EPSS
- GHSA-x6fg-f45m-jf5q · GitHub Advisory Database · CC BY 4.0
- CVE-2015-8855 · 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