CVE•Published 2026-06-16•Modified 2026-07-14•1 article on news•4 live references•NVD data
CVE-2026-53776
Vulnerability data via NVD (ingested)
CVSS v3.1
9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS percentile
28
Exploit Prediction Scoring System · top 72% of all CVEs
Weaknesses (CWE)
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.
Timeline
Published 2026-06-16
Modified 2026-07-14
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-53776Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-53776Censys host search filtered to this CVE id.
grep.app
CVE-2026-53776Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-53776GitHub code search for direct mentions.
Google dork
"CVE-2026-53776" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-53776 on GitHub.