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      "text" : "An update for python-jwt is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support.\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.",
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      "text" : "Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems.\n\nSecurity Fix(es):\n\n* pyjwt: PyJWT accepts unknown `crit` header extensions (RFC 7515 ?4.1.11 MUST violation) (CVE-2026-32597)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
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    "cve" : "CVE-2026-32597",
    "cwe" : {
      "id" : "CWE-347",
      "name" : "Improper Verification of Cryptographic Signature"
    },
    "discovery_date" : "2026-03-12T22:01:29.967713+00:00",
    "ids" : [ {
      "system_name" : "Red Hat Bugzilla ID",
      "text" : "2447194"
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    "notes" : [ {
      "category" : "description",
      "text" : "A missing verification step has been discovered in PyJWT. 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.",
      "title" : "Vulnerability description"
    }, {
      "category" : "summary",
      "text" : "pyjwt: PyJWT accepts unknown `crit` header extensions (RFC 7515 §4.1.11 MUST violation)",
      "title" : "Vulnerability summary"
    }, {
      "category" : "other",
      "text" : "An IMPORTANT severity flaw was found in PyJWT, a Python JSON Web Token (JWT) library shipped in a broad set of Red Hat products, including Red Hat Ansible Automation Platform, Red Hat Enterprise Linux, Red Hat OpenShift AI and Red Hat AI Inference Server components, and Red Hat Quay. PyJWT does not validate the crit (Critical) Header Parameter defined in RFC 7515 section 4.1.11: when a JSON Web Signature (JWS) token contains a crit array listing header extensions that PyJWT does not understand, the library accepts the token instead of rejecting it, violating a MUST requirement of the RFC. As a result, a remote attacker who can submit crafted tokens to an application that relies on PyJWT for JWT verification can have tokens carrying unrecognized critical header extensions accepted, undermining the integrity of the token validation the application depends on. Red Hat has rated this flaw as IMPORTANT with a CVSS 3.1 score of 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N), consistent with the upstream severity. Affected Red Hat product streams are tracked with a delegated resolution, and fixes are being pursued by the responsible product teams.",
      "title" : "Statement"
    }, {
      "category" : "general",
      "text" : "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
      "title" : "CVSS score applicability"
    } ],
    "product_status" : {
      "fixed" : [ "7Server-HighAvailability-ELS:python-jwt-0:1.5.3-1.el7_9.1.noarch", "7Server-HighAvailability-ELS:python-jwt-0:1.5.3-1.el7_9.1.src", "7Server-ResilientStorage-ELS:python-jwt-0:1.5.3-1.el7_9.1.noarch", "7Server-ResilientStorage-ELS:python-jwt-0:1.5.3-1.el7_9.1.src" ]
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      "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2447194"
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      "summary" : "https://www.cve.org/CVERecord?id=CVE-2026-32597",
      "url" : "https://www.cve.org/CVERecord?id=CVE-2026-32597"
    }, {
      "category" : "external",
      "summary" : "https://nvd.nist.gov/vuln/detail/CVE-2026-32597",
      "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-32597"
    }, {
      "category" : "external",
      "summary" : "https://github.com/jpadilla/pyjwt/security/advisories/GHSA-752w-5fwx-jx9f",
      "url" : "https://github.com/jpadilla/pyjwt/security/advisories/GHSA-752w-5fwx-jx9f"
    } ],
    "release_date" : "2026-03-12T21:41:50.427000+00:00",
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      "date" : "2026-11-09T01:58:17+00:00",
      "details" : "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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      "restart_required" : {
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      "url" : "https://access.redhat.com/errata/RHSA-2026:96084"
    }, {
      "category" : "workaround",
      "details" : "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
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    } ],
    "scores" : [ {
      "cvss_v3" : {
        "attackComplexity" : "LOW",
        "attackVector" : "NETWORK",
        "availabilityImpact" : "NONE",
        "baseScore" : 7.5,
        "baseSeverity" : "HIGH",
        "confidentialityImpact" : "NONE",
        "integrityImpact" : "HIGH",
        "privilegesRequired" : "NONE",
        "scope" : "UNCHANGED",
        "userInteraction" : "NONE",
        "vectorString" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
        "version" : "3.1"
      },
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    } ],
    "threats" : [ {
      "category" : "impact",
      "details" : "Important"
    } ],
    "title" : "pyjwt: PyJWT accepts unknown `crit` header extensions (RFC 7515 §4.1.11 MUST violation)"
  } ]
}