Apache MyFaces: Denial of Service via Unbounded Request Parsing
Priority MEDIUM 40CWE-400Published · 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
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-400.
Summary
A remote attacker could cause excessive resource consumption by supplying specially crafted request parameters, potentially resulting in a denial of service condition. Older unsupported versions may also be affected. Users are recommended to upgrade to versions 2.3.12, 2.3-next-M9, 3.0.4, 4.0.4, or 4.1.4, which fix this issue.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00582 48th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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 |
|---|---|---|---|---|---|
| Apache | Apache MyFaces | 2.2.0-beta – 2.2.15; 2.3.0; 2.3-next-M1 – 2.3-next-M8; 2.3.1 – 2.3.11; 3.0.0 – 3.0.3; 4.0.0 – 4.0.3; 4.1.0 – 4.1.3 | — | No fix listed | CNA |
- Apache MyFaces VendorApache Affected 2.2.0-beta – 2.2.15; 2.3.0; 2.3-next-M1 – 2.3-next-M8; 2.3.1 – 2.3.11; 3.0.0 – 3.0.3; 4.0.0 – 4.0.3; 4.1.0 – 4.1.3 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-76646
- 2026-10-03 Alias added: GHSA-3h23-h733-q43f
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 CVSS score added · Red Hat
References
More Apache vulnerabilities
- TI-2025-18529 Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT KEVCVSS 3.1CRITICAL 10.0
- TI-2024-30292 Apache OFBiz: Confused controller-view authorization logic (forced browsing) KEVCVSS 3.1CRITICAL 9.8
- TI-2024-26062 Apache OFBiz: Unauthenticated endpoint could allow execution of screen rendering code KEVCVSS 3.1CRITICAL 9.8
- TI-2024-21190 Apache OFBiz: Path traversal leading to RCE KEVCVSS 3.1CRITICAL 9.8
- TI-2024-18186 Apache HugeGraph-Server: Command execution in gremlin KEVCVSS 3.1CRITICAL 9.8
- TI-2023-25106 Deserialization of untrusted data in Apache ActiveMQ KEVCVSS 3.1CRITICAL 10.0
Sources
- CVE-2026-76646 · CVE Program
- CVE-2026-76646 · NVD
- FIRST EPSS
- GHSA-3h23-h733-q43f · GitHub Advisory Database · CC BY 4.0
- CVE-2026-76646 · 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