{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.5.1166"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c970fc567366f166ae3ea9d746e37442fdec4d5b"
            }
          ],
          "repo": "https://github.com/perryts/perry",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-5324-c68v-8w62"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-613"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53776.json"
  },
  "details": "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.",
  "id": "CVE-2026-53776",
  "modified": "2026-07-08T05:38:41.173431748Z",
  "published": "2026-06-16T15:18:53.658Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53776.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/PerryTS/perry/releases/v0.5.1166"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/PerryTS/perry/security/advisories/GHSA-5324-c68v-8w62"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53776"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/perry-jwt-expiration-bypass-via-verify-decode"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/PerryTS/perry"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Perry \u003c 0.5.1166 JWT Expiration Bypass via verify_decode"
}