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DEBIAN-CVE-2026-32597

Type: advisorySource: OSV1 source record

PyJWT is a JSON Web Token implementation in Python. Prior to 2.12.0, PyJWT does not validate the crit (Critical) Header Parameter defined in RFC 7515 §4.1.11. When a JWS token contains a crit array listing extensions that PyJWT does not understand, the library accepts the token instead of rejecting it. This violates the MUST requirement in the RFC. This vulnerability is fixed in 2.12.0.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-32597

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-32597

pyjwt

Source reference: /affected/0/package/name

Affected versions
2.6.0-1

Source reference: /affected/0/versions

Fixed versions
2.6.0-1+deb12u1

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

pyjwt

Source reference: /affected/1/package/name

Affected versions
2.10.1-2

Source reference: /affected/1/versions

Fixed versions
2.10.1-2+deb13u1

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

pyjwt

Source reference: /affected/2/package/name

Affected versions
2.10.1-2

Source reference: /affected/2/versions

2.10.1-3

Source reference: /affected/2/versions

2.10.1-4

Source reference: /affected/2/versions

2.11.0-2

Source reference: /affected/2/versions

Fixed versions
2.12.1-1

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2.6.0-1+deb12u1"
          }
        ]
      }
    ],
    "package": {
      "name": "pyjwt",
      "purl": "pkg:deb/debian/pyjwt?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "2.6.0-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-32597.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2.10.1-2+deb13u1"
          }
        ]
      }
    ],
    "package": {
      "name": "pyjwt",
      "purl": "pkg:deb/debian/pyjwt?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "2.10.1-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-32597.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2.12.1-1"
          }
        ]
      }
    ],
    "package": {
      "name": "pyjwt",
      "purl": "pkg:deb/debian/pyjwt?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "2.10.1-2",
      "2.10.1-3",
      "2.10.1-4",
      "2.11.0-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-32597.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#56360 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-32597 · Revision 1Source updated