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CVE-2026-53776

Perry < 0.5.1166 JWT Expiration Bypass via verify_decode PUBLISHED

Description (CNA)

Perry before 0.5.1166 contains a JWT validation vulnerability that allows remote attackers to bypass token expiration by exploiting the unconditional setting of validate_exp = false in the verify_decode helper within the stdlib JWT verification path. Attackers in possession of a previously issued bearer token can present expired tokens to any jwt.verify() call and retain authenticated access indefinitely, bypassing force-expired sessions such as user logout or administrative revocation.

Affected (CNA)

Vendor / productVersions
PerryTS / perryaffected 0 before 0.5.1166

CWE

CWE-613

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.