CVE-2026-80179

Jwcrypto: jwcrypto: denial of service via malformed jwe tokens

publishedCWE-770

A flaw was found in jwcrypto. A remote attacker can send a specially crafted JSON Web Encryption (JWE) token containing numerous period delimiters. This malformed token can force the JWE.deserialize() function to allocate excessive memory, leading to a MemoryError. This issue results in a denial of service (DoS) for services that process untrusted JWE values.

Technical severity5.9 mediumCVSS 3.1 · CNA: redhat

Published2026-08-27Source updated 2026-11-06

Collected2026-11-062 attributed sources

Fixes and workarounds

Workaround

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.

Source: CNA: redhat

Affected products and versions

Affected products, source version ranges and reporting authorities
Product	Versions	Authority
Red Hat Ansible Automation Platform 2 Red Hat `ansible-automation-platform-24/controller-rhel8` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Ansible Automation Platform 2 Red Hat `ansible-automation-platform-24/lightspeed-rhel8` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Ansible Automation Platform 2 Red Hat `ansible-automation-platform-25/controller-rhel8` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Ansible Automation Platform 2 Red Hat `ansible-automation-platform-25/gateway-rhel8` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Ansible Automation Platform 2 Red Hat `ansible-automation-platform-25/lightspeed-rhel8` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Ansible Automation Platform 2 Red Hat `ansible-automation-platform-26/controller-rhel9` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Ansible Automation Platform 2 Red Hat `ansible-automation-platform-26/gateway-rhel9` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Ansible Automation Platform 2 Red Hat `ansible-automation-platform-26/lightspeed-rhel9` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Ansible Automation Platform 2 Red Hat `ansible-automation-platform-27/gateway-rhel9` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Ansible Automation Platform 2 Red Hat `ansible-automation-platform-27/lightspeed-rhel9` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Ansible Automation Platform 2 Red Hat `automation-controller` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Ansible Automation Platform 2 Red Hat `python3.11-jwcrypto` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Ansible Automation Platform 2 Red Hat `python3.12-jwcrypto` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 10 Red Hat `python-jwcrypto` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 9 Red Hat `python-jwcrypto` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat OpenShift AI (RHOAI) Red Hat `rhoai/odh-feature-server-rhel9` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat OpenShift AI (RHOAI) Red Hat `rhoai/odh-kserve-storage-initializer-rhel9` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat OpenStack Platform 16.2 Red Hat `rhosp-rhel8/openstack-mistral-executor` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat OpenStack Platform 16.2 Red Hat `rhosp-rhel8/openstack-nova-api` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat OpenStack Platform 16.2 Red Hat `rhosp-rhel8/openstack-nova-compute-ironic` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat OpenStack Platform 16.2 Red Hat `rhosp-rhel8/openstack-novajoin-base` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat OpenStack Platform 16.2 Red Hat `rhosp-rhel8/openstack-novajoin-notifier` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat OpenStack Platform 16.2 Red Hat `rhosp-rhel8/openstack-novajoin-server` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat OpenStack Platform 16.2 Red Hat `rhosp-rhel8/openstack-tempest` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat OpenStack Platform 16.2 Red Hat `rhosp-rhel8/openstack-tripleoclient` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / score	Vector	Authority
3.1 / 5.9 medium	`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H`	CNA: redhat

Exploit evidence

https://github.com/latchset/jwcrypto/security/advisories/GHSA-96rv-c4vc-h4f4
exploit · ADP: CISA-ADP

References

https://access.redhat.com/security/cve/CVE-2026-80179CNA: redhat · vdb-entry, x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2524147CNA: redhat · issue-tracking, x_refsource_REDHAT
https://github.com/latchset/jwcrypto/security/advisories/GHSA-96rv-c4vc-h4f4CNA: redhat
https://github.com/latchset/jwcrypto/security/advisories/GHSA-96rv-c4vc-h4f4ADP: CISA-ADP · exploit

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