Cloudanix VulnDB

CVE-2026-53776

Critical · 9.1

CVSS

9.1

EPSS

0.6%

Published

Jun 16, 2026

CISA due date

—

The record

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 packages

Ecosystem Package Introduced Fixed

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