CVE-2026-25554
CVE-2026-25554 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v4: 8.3
- EPSS exploit prediction: 0% (24th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-8694
- Weakness: CWE-89
- Published:
- Last modified:
Description
OpenSIPS versions 3.1 before 3.6.4 containing the auth_jwt module (prior to commit 3822d33) contain a SQL injection vulnerability in the jwt_db_authorize() function in modules/auth_jwt/authorize.c when db_mode is enabled and a SQL database backend is used. The function extracts the tag claim from a JWT without prior signature verification and incorporates the unescaped value directly into a SQL query. An attacker can supply a crafted JWT with a malicious tag claim to manipulate the query result and bypass JWT authentication, allowing impersonation of arbitrary identities.
Frequently asked questions
- What is CVE-2026-25554?
- OpenSIPS versions 3.1 before 3.6.4 containing the auth_jwt module (prior to commit 3822d33) contain a SQL injection vulnerability in the jwt_db_authorize() function in modules/auth_jwt/authorize.c when db_mode is enabled and a SQL database backend is used. The function extracts the tag claim from a JWT without prior signature verification and incorporates the unescaped value directly into a SQL query. An attacker can supply a crafted JWT with a malicious tag claim to manipulate the query result and bypass JWT authentication, allowing impersonation of arbitrary identities.
- How severe is CVE-2026-25554?
- CVE-2026-25554 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
- Is CVE-2026-25554 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-25554?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-25554 have an EU (EUVD) identifier?
- Yes. CVE-2026-25554 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8694.
- When was CVE-2026-25554 published?
- CVE-2026-25554 was published on 2026-02-25 and last updated on 2026-06-17.
References
- https://github.com/OpenSIPS/opensips/commit/3822d33c1c6b25832fdd88da1d23eed74be55b05
- https://github.com/OpenSIPS/opensips/pull/3807
- https://opensips.org/
- https://opensips.org/pub/opensips/3.6.4/ChangeLog
- https://www.vulncheck.com/advisories/opensips-auth-jwt-sql-injection-enables-jwt-authentication-bypass
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