PyJWT accepts unknown `crit` header extensions (RFC 7515 §4.1.11 MUST violation)
Summary
| CVE | CVE-2026-32597 |
|---|---|
| State | PUBLISHED |
| Assigner | GitHub_M |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-03-13 19:55:09 UTC |
| Updated | 2026-07-22 12:17:34 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS: 0.002690000 probability, percentile 0.187800000 (date 2026-07-22)
Problem Types: CWE-345 | CWE-863 | CWE-347 | CWE-345 CWE-345: Insufficient Verification of Data Authenticity | CWE-863 CWE-863: Incorrect Authorization | CWE-347 Improper Verification of Cryptographic Signature
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | ADP | CVSS | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| 3.1 | [email protected] | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| 3.1 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| 3.1 | CNA | DECLARED | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
HighAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Pyjwt Project | Pyjwt | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Jpadilla | Pyjwt | affected < 2.12.0 | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.5 For RHEL 8 | unaffected 0:4.6.28-3.el8ap * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.5 For RHEL 8 | unaffected 0:2.12.1-1.el8ap * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.5 For RHEL 9 | unaffected 0:4.6.28-3.el9ap * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.5 For RHEL 9 | unaffected 0:2.12.1-1.el9ap * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.6 For RHEL 9 | unaffected 0:4.7.11-2.el9ap * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.6 For RHEL 9 | unaffected 0:2.12.1-1.el9ap * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 10 | unaffected 0:4.16.0-13.el10_1.4 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 10 | unaffected 0:4.16.0-21.el10_2.1 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | unaffected 0:4.16.0-5.el10_0.9 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8 | unaffected 0:4.2.1-129.el8_10.25 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9 | unaffected 0:4.10.0-110.el9_8.2 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9 | unaffected 0:4.10.0-98.el9_7.12 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9.2 Update Services For SAP Solutions | unaffected 0:4.10.0-43.el9_2.21 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | unaffected 0:4.10.0-62.el9_4.24 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | unaffected 0:4.10.0-86.el9_6.16 * rpm | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server 3.3 | unaffected 1775680192 * rpm | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server 3.3 | unaffected 1775680262 * rpm | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server 3.3 | unaffected 1775749857 * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.5 | unaffected 1777394109 * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.5 | unaffected 1777403872 * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.6 | unaffected 1777296732 * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.6 | unaffected 1777391447 * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.6 | unaffected 1777311120 * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.6 | unaffected 1777299023 * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.6 | unaffected 1777398576 * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.6 | unaffected 1777387242 * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.6 | unaffected 1777311601 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AI 3.3 | unaffected 1776871984 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AI 3.3 | unaffected 1776871985 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AI 3.3 | unaffected 1776872005 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AI 3.3 | unaffected 1776773390 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AI 3.3 | unaffected 1776871987 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AI 3.3 | unaffected 1776773505 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AI 3.3 | unaffected 1776938871 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1776338381 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1776343111 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1780069069 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783696512 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783616068 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783998551 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783664916 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783615385 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783664921 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783696507 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783615414 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783998585 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783664921 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783615165 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783664921 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783615432 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 3.3 | unaffected 1778264363 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 3.3 | unaffected 1778600187 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 3.3 | unaffected 1782472374 * rpm | Not specified |
| ADP | Red Hat | Red Hat Quay 3.1 | unaffected 1775169155 * rpm | Not specified |
| ADP | Red Hat | Red Hat Quay 3.12 | unaffected 1775253092 * rpm | Not specified |
| ADP | Red Hat | Red Hat Quay 3.15 | unaffected 1775169219 * rpm | Not specified |
| ADP | Red Hat | Red Hat Quay 3.16 | unaffected 1779204086 * rpm | Not specified |
| ADP | Red Hat | Red Hat Quay 3.9 | unaffected 1775169218 * rpm | Not specified |
| ADP | Red Hat | Red Hat Satellite 6.18 | unaffected 1780414237 * rpm | Not specified |
| ADP | Red Hat | Red Hat Trusted Artifact Signer 1.4 | unaffected 1775815407 * rpm | Not specified |
| ADP | Red Hat | OpenShift Lightspeed | Not specified | Not specified |
| ADP | Red Hat | OpenShift Lightspeed | Not specified | Not specified |
| ADP | Red Hat | OpenShift Lightspeed | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat Satellite 6 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Trusted Artifact Signer | Not specified | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| access.redhat.com/errata/RHSA-2026:17083 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:13512 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:8437 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:13916 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:19355 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/security/cve/CVE-2026-32597 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:13553 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:21431 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:24977 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| github.com/jpadilla/pyjwt/security/advisories/GHSA-752w-5fwx-jx9f | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | github.com | Exploit, Mitigation, Vendor Advisory |
| access.redhat.com/errata/RHSA-2026:42644 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:6720 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:13508 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:8747 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:6568 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:10184 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:10140 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:37275 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32597.json | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | security.access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:21517 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:19375 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| lists.debian.org/debian-lts-announce/2026/05/msg00008.html | af854a3a-2127-422b-91ae-364da2661108 | lists.debian.org | |
| access.redhat.com/errata/RHSA-2026:12176 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:10141 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:6912 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| bugzilla.redhat.com/show_bug.cgi | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | bugzilla.redhat.com | |
| access.redhat.com/errata/RHSA-2026:6926 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:8746 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:8748 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:13672 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:19138 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:26226 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:13545 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:19712 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:22330 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| ADP | 2026-03-12T22:01:29.967Z | Reported to Red Hat. |
| ADP | 2026-03-12T21:41:50.427Z | Made public. |
Solutions
ADP: RHSA-2026:13512: Red Hat Ansible Automation Platform 2.5 for RHEL 8, Red Hat Ansible Automation Platform 2.5 for RHEL 9
ADP: RHSA-2026:13508: Red Hat Ansible Automation Platform 2.6 for RHEL 9
ADP: RHSA-2026:17083: Red Hat Enterprise Linux AppStream EUS (v. 10.0)
ADP: RHSA-2026:13916: Red Hat Enterprise Linux AppStream (v. 10)
ADP: RHSA-2026:19138: Red Hat Enterprise Linux AppStream (v. 10)
ADP: RHSA-2026:12176: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux HighAvailability (v. 8), Red Hat Enterprise Linux ResilientStorage (v. 8)
ADP: RHSA-2026:22330: Red Hat Enterprise Linux AppStream E4S (v.9.2), Red Hat Enterprise Linux High Availability E4S (v.9.2), Red Hat Enterprise Linux Resilient Storage E4S (v.9.2)
ADP: RHSA-2026:21517: Red Hat Enterprise Linux AppStream EUS (v.9.4), Red Hat Enterprise Linux High Availability EUS (v.9.4), Red Hat Enterprise Linux Resilient Storage EUS (v.9.4)
ADP: RHSA-2026:21431: Red Hat Enterprise Linux AppStream EUS (v.9.6)
ADP: RHSA-2026:13672: Red Hat Enterprise Linux AppStream (v. 9)
ADP: RHSA-2026:19355: Red Hat Enterprise Linux AppStream (v. 9)
ADP: RHSA-2026:8748: Red Hat AI Inference Server 3.3
ADP: RHSA-2026:8746: Red Hat AI Inference Server 3.3
ADP: RHSA-2026:8747: Red Hat AI Inference Server 3.3
ADP: RHSA-2026:13553: Red Hat Ansible Automation Platform 2.5
ADP: RHSA-2026:13545: Red Hat Ansible Automation Platform 2.6
ADP: RHSA-2026:10140: Red Hat Enterprise Linux AI 3.3
ADP: RHSA-2026:10141: Red Hat Enterprise Linux AI 3.3
ADP: RHSA-2026:10184: Red Hat OpenShift AI 2.25
ADP: RHSA-2026:42644: Red Hat OpenShift AI 2.25
ADP: RHSA-2026:24977: Red Hat OpenShift AI 2.25
ADP: RHSA-2026:37275: Red Hat OpenShift AI 3.3
ADP: RHSA-2026:19712: Red Hat OpenShift AI 3.3
ADP: RHSA-2026:6720: Red Hat Quay 3.12
ADP: RHSA-2026:6568: Red Hat Quay 3.15
ADP: RHSA-2026:19375: Red Hat Quay 3.16
ADP: RHSA-2026:6912: Red Hat Quay 3.1
ADP: RHSA-2026:6926: Red Hat Quay 3.9
ADP: RHSA-2026:26226: Red Hat Satellite 6.18
ADP: RHSA-2026:8437: Red Hat Trusted Artifact Signer 1.4
Workarounds
ADP: 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.
There are currently no legacy QID mappings associated with this CVE.