Authentication bypass via omitted mandatory JWT claims
Published Jul 14, 2026 · Updated Jul 14, 2026
Authentication bypass in Symfony Security HTTP allows remote attackers with a validly signed JWT to assume its encoded identity. OidcTokenHandler::verifyClaims() registers aud, iss, and exp checkers but omits the mandatory-claims list when calling ClaimCheckerManager::check(), which skips absent claims. Exploitation requires a signature from a trusted key, but omitted audience, issuer, and expiry constraints enable identity spoofing across security boundaries.
Summary
What happened
Authentication bypass in Symfony Security HTTP allows remote attackers with a validly signed JWT to assume its encoded identity. OidcTokenHandler::verifyClaims() registers aud, iss, and exp checkers but omits the mandatory-claims list when calling ClaimCheckerManager::check(), which skips absent claims. Exploitation requires a signature from a trusted key, but omitted audience, issuer, and expiry constraints enable identity spoofing across security boundaries.
The record
- CVE
- CVE-2026-45069
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Symfony
- Product
- Symfony Security HTTP
- Classifications
- CWE-345, CWE-1287
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 14, 2026CVE publishedPublication date reported by the CVE source.
- Jul 14, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=>= 6.3.0, < 6.4.40
- Affected versionversion=>= 7.4.0, < 7.4.12
- Affected versionversion=>= 8.0.0-BETA1, < 8.0.12
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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