Vulnerability in Sensiolabs Symfony
CVE-2026-45069
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 6.4.40, 7.4.12, and 8.0.12, OidcTokenHandler::verifyClaims() registered audience (aud), issuer (iss), and expiry (exp) checkers but did not pass the mandatory claims list to ClaimCheckerManager::check(), so a validly signed JWT that omitted those claims could pass verification. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (16.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Sensiolabs Symfony
- Symfony Security-Http — versions >= 6.3.0, < 6.4.40, >= 7.4.0, < 7.4.12, >= 8.0.0-BETA1, < 8.0.12
- Symfony — versions >= 6.3.0, < 6.4.40, >= 7.4.0, < 7.4.12, >= 8.0.0-BETA1, < 8.0.12
Weakness classification (CWE)
References
- github.com/symfony/symfony/security/advisories/GHSA-29fc-p6c4-24cg (Patch, Vendor Advisory)
- github.com/symfony/symfony/releases/tag/v6.4.40 (Product, Release Notes)
- github.com/symfony/symfony/releases/tag/v7.4.12 (Product, Release Notes)
- github.com/symfony/symfony/releases/tag/v8.0.12 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-45069?
- CVE-2026-45069 is a critical-severity vulnerability in Sensiolabs Symfony, classified under Insufficient Verification of Data Authenticity. CVSS score: 9.1/10. Published 2026-07-14.
- How severe is CVE-2026-45069?
- Critical severity. CVSS v3 base score is 9.1 out of 10.