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CVE-2026-53776 Details

UNDERGOING ENRICHMENT

The CVE is currently being enriched by the Volerion team. The enrichment process results in the association of reference link tags, CVSS, and CPE applicability statement data.

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:…Vector:This vulnerability is currently being analyzed.

CNA: [email protected]CVSS-B:9.1 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/PerryTS/perry/releases/v0.5.1166	[email protected]
https://github.com/PerryTS/perry/security/advisories/GHSA-5324-c68v-8w62	[email protected]
https://www.vulncheck.com/advisories/perry-jwt-expiration-bypass-via-verify-decode	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-613	Insufficient Session Expiration	[email protected]

Affected Products

This vulnerability is currently being analyzed

Change History

4 change records found show changes

Date	Action	Recorded By
Jul 14, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 16, 2026	New CVE Received	[email protected]