CVE-2026-32597

EUVD-2026-11728
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 2%
Affected Products (NVD)
VendorProductVersion
pyjwt_projectpyjwt
𝑥
< 2.12.0
𝑥
= Vulnerable software versions
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
pyjwt
bionic
Fixed 1.5.3+ds1-1ubuntu0.1+esm1
released
focal
Fixed 1.7.1-2ubuntu2.1+esm1
released
jammy
Fixed 2.3.0-1ubuntu0.3
released
noble
Fixed 2.7.0-1ubuntu0.1
released
questing
Fixed 2.10.1-2ubuntu0.1
released
xenial
Fixed 1.3.0-1ubuntu0.1+esm1
released
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
python3-PyJWT
suse enterprise sap 15 SP4
2.4.0-150200.3.11.1
fixed
suse enterprise sap 15 SP5
2.4.0-150200.3.11.1
fixed
suse enterprise sap 15 SP6
2.4.0-150200.3.11.1
fixed
suse enterprise server 15 SP4
2.4.0-150200.3.11.1
fixed
suse enterprise server 15 SP5
2.4.0-150200.3.11.1
fixed
suse enterprise server 15 SP6
2.4.0-150200.3.11.1
fixed
python311-PyJWT
suse enterprise sap 15 SP4
2.8.0-150400.8.10.1
fixed
suse enterprise sap 15 SP5
2.8.0-150400.8.10.1
fixed
suse enterprise sap 15 SP6
2.8.0-150400.8.10.1
fixed
suse enterprise server 15 SP4
2.8.0-150400.8.10.1
fixed
suse enterprise server 15 SP5
2.8.0-150400.8.10.1
fixed
suse enterprise server 15 SP6
2.8.0-150400.8.10.1
fixed
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
fence-agents-aliyun
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-all
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-amt-ws
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-apc
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-apc-snmp
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-aws
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-azure-arm
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-bladecenter
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-brocade
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-cisco-mds
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-cisco-ucs
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-common
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-compute
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-drac5
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-eaton-snmp
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-emerson
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-eps
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-gce
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-heuristics-ping
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-hpblade
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-ibm-powervs
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-ibm-vpc
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-ibmblade
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-ifmib
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-ilo-moonshot
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-ilo-mp
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-ilo-ssh
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-ilo2
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-intelmodular
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-ipdu
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-ipmilan
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-kdump
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-kubevirt
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-lpar
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-mpath
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-nutanix-ahv
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-openstack
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-redfish
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-rhevm
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-rsa
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-rsb
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-sbd
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-scsi
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-virsh
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-vmware-rest
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-vmware-soap
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-wti
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-agents-zvm
RHEL 8
0:4.2.1-129.el8_10.25
fixed
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-virt
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-virtd
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-virtd-cpg
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-virtd-libvirt
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-virtd-multicast
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-virtd-serial
RHEL 9
0:4.10.0-110.el9_8.2
fixed
fence-virtd-tcp
RHEL 9
0:4.10.0-110.el9_8.2
fixed
ha-cloud-support
RHEL 9
0:4.10.0-110.el9_8.2
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
python3-jwt
Amazon Linux 2023
0:2.4.0-1.amzn2023.0.3
fixed
python3-jwt+crypto
Amazon Linux 2023
0:2.4.0-1.amzn2023.0.3
fixed
Common Weakness Enumeration
References
https://github.com/jpadilla/pyjwt/security/advisories/GHSA-752w-5fwx-jx9f
https://lists.debian.org/debian-lts-announce/2026/05/msg00008.html
https://github.com/jpadilla/pyjwt/security/advisories/GHSA-752w-5fwx-jx9f