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CVE-2026-45069

Sensiolabs Symfony vulnerability

9.1 CRITICALEPSS 0.26%
  1. Published14 Jul 2026

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

Sensiolabs Symfony≥ 6.3.0 < 6.4.40 · ≥ 7.4.0 < 7.4.12 · ≥ 8.0.0 < 8.0.12

Remediation

Fixed in
Sensiolabs Symfony≥ 6.4.40

References

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Frequently asked

Is CVE-2026-45069 being actively exploited?

CVE-2026-45069 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.26%.

How severe is CVE-2026-45069?

CVE-2026-45069 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.26% probability of exploitation.

Which products are affected by CVE-2026-45069?

Affected products include Sensiolabs Symfony.

How do I fix CVE-2026-45069?

Upgrade affected software to a fixed version, for example Sensiolabs Symfony 6.4.40 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-45069 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.