The libCheckSignature function in crypto-utils.lib for OpenCA 0.9.1.6 and earlier only…
Priority LOW 37Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The libCheckSignature function in crypto-utils.lib for OpenCA 0.9.1.6 and earlier only compares the serial of the signer's certificate and the one in the database, which can cause OpenCA to incorrectly accept a signature if the certificate's chain is trusted by OpenCA's chain directory, allowing remote attackers to spoof requests from other users.
Why it matters now
EPSS 0.0209 81st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2004-0004
- 2026-10-03 Alias added: GHSA-7459-9rcq-g3xj
References
More Openca vulnerabilities
- TI-2003-00867 OpenCA before 0.9.1.4 does not use the correct certificate in a chain to check the… CVSS 2.0HIGH 7.5
- TI-2004-00725 Cross-site scripting (XSS) vulnerability in the web frontend in OpenCA 0.9.1-8 and… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2004-0004 · CVE Program
- CVE-2004-0004 · NVD
- FIRST EPSS
- GHSA-7459-9rcq-g3xj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences