CVE-2026-45069: sensiolabs symfony
Vulnerability summary
CVE-2026-45069 is a critical (CVSS 9.1) vulnerability in sensiolabs symfony. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 16.4% of scored vulnerabilities.
Timeline
- 14-07-2026PublishedVulnerability first disclosed.
- 14-07-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
6 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
- NVDNIST8.8HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- OSV · UbuntuEcosystem advisory · calculated9.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- OSV · DebianEcosystem advisory · calculated9.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS trend
Probability
0.26%
Chance of exploitation in the next 30 days
Percentile
16%
Versus all other CVEs
30-day change
0.00 pp
From 0.26% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-345Insufficient Verification of Data AuthenticityThe product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.
- CWE-1287Improper Validation of Specified Type of InputThe product receives input that is expected to be of a certain type, but it does not validate or incorrectly validates that the input is actually of the expected type.
Affected systems
Symfony2 products
- security-http≥ 6.3.0, < 6.4.40 | ≥ 7.4.0, < 7.4.12 | ≥ 8.0.0-BETA1, < 8.0.12
- symfony≥ 6.3.0, < 6.4.40 | ≥ 7.4.0, < 7.4.12 | ≥ 8.0.0-BETA1, < 8.0.12
Debian1 product
- symfony< 6.4.41+dfsg-0+deb13u1 | < 7.4.12+dfsg-1
Sensiolabs1 product
- symfony≥ 6.3.0, < 6.4.40 | ≥ 7.4.0, < 7.4.12 | ≥ 8.0.0, < 8.0.12
Ubuntu1 product
- symfonyAll versions (No fix recorded)
4 vendors · 5 products
References
8 links- github.com/symfony/symfony/security/advisories/GHSA-29fc-p6c4-24cgX Refsource CONFIRMPatchVendor Advisory
