php-jwt v6.11.0 was discovered to contain weak encryption.
Priority MEDIUM 62CWE-326Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-326.
Summary
php-jwt v6.11.0 was discovered to contain weak encryption. NOTE: this issue has been disputed on the basis that key lengths are expected to be set by an application, not by this library. This dispute is subject to review under CNA rules 4.1.4, 4.1.14, and other rules; the dispute tagging is not meant to recommend an outcome for this CVE Record.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00148 4th percentileScored 2026-11-07
Fix Fixed firebase/php-jwt (Packagist): 7.0.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- 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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | firebase/php-jwt (Packagist) | before 7.0.0 | 7.0.0 | Patch available | GHSA-2x45-7fc3-mxwq |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- firebase/php-jwt (Packagist) Vendor— Affected before 7.0.0 Fixed in 7.0.0 Patch available GHSA-2x45-7fc3-mxwq
Remediation
- Fix · GHSA-2x45-7fc3-mxwq firebase/php-jwt (Packagist) Fixed in 7.0.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-45769
- 2026-10-03 Alias added: GHSA-2x45-7fc3-mxwq
References
Advisory 3
Other 9
- https://github.com/firebase/php-jwt
- https://github.com/firebase
- https://github.com/firebase/php-jwt/issues/620
- https://github.com/github/advisory-database/pull/6954
- https://github.com/firebase/php-jwt/releases/tag/v7.0.0
- https://github.com/firebase/php-jwt/pull/613
- https://github.com/firebase/php-jwt/issues/611
- https://github.com/firebase/php-jwt/issues/618
- https://github.com/firebase/php-jwt/commit/6b80341bf57838ea2d011487917337901cd71576
More Google Firebase Php-jwt vulnerabilities
- TI-2021-21463 In Firebase PHP-JWT before 6.0.0, an algorithm-confusion issue (e.g., RS256 / HS256)… CVSS 3.1CRITICAL 9.1
Sources
- CVE-2025-45769 · CVE Program
- CVE-2025-45769 · NVD
- FIRST EPSS
- GHSA-2x45-7fc3-mxwq · 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