Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Symfony's OidcTokenHandler in symfony/security-http and symfony/symfony, versions from 6.3.0 to before 6.4.40, from 7.4.0 to before 7.4.12, and from 8.0.0 to before 8.0.12, accepts JWT access tokens that omit the aud, iss, and exp claims, because the handler does not pass the mandatory claims list to the claim checker. An attacker who holds a validly signed JWT lacking those claims can have it accepted as a valid bearer token. Upgrade to symfony/security-http or symfony/symfony 6.4.40, 7.4.12, or 8.0.12, depending on the branch in use.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.8 | High | 4.0 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0026, the 17th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:02 UTC First seen by agentprime
- 31 Oct 2026, 14:02 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-29fc-p6c4-24cg
- OSV: GHSA-29fc-p6c4-24cg
- github.com/symfony/symfony/security/advisories/GHSA-29fc-p6c4-24cg
- github.com/symfony/symfony/commit/6b717aaac21b7e96798448d14c4355ea87690b3d
- github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2026-45069.yaml
- github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45069.yaml
- github.com/symfony/symfony
- symfony.com/cve-2026-45069