# CVE-2026-80179: Jwcrypto: jwcrypto: denial of service via malformed jwe tokens Status: published. Published: 2026-08-27. Updated: 2026-11-06. 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. ## Remediation - 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 - Red Hat / Red Hat Ansible Automation Platform 2 (ansible-automation-platform-24/controller-rhel8): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat Ansible Automation Platform 2 (ansible-automation-platform-24/lightspeed-rhel8): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat Ansible Automation Platform 2 (ansible-automation-platform-25/controller-rhel8): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat Ansible Automation Platform 2 (ansible-automation-platform-25/gateway-rhel8): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat Ansible Automation Platform 2 (ansible-automation-platform-25/lightspeed-rhel8): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat Ansible Automation Platform 2 (ansible-automation-platform-26/controller-rhel9): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat Ansible Automation Platform 2 (ansible-automation-platform-26/gateway-rhel9): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat Ansible Automation Platform 2 (ansible-automation-platform-26/lightspeed-rhel9): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat Ansible Automation Platform 2 (ansible-automation-platform-27/gateway-rhel9): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat Ansible Automation Platform 2 (ansible-automation-platform-27/lightspeed-rhel9): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat Ansible Automation Platform 2 (automation-controller): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat Ansible Automation Platform 2 (python3.11-jwcrypto): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat Ansible Automation Platform 2 (python3.12-jwcrypto): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 10 (python-jwcrypto): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 9 (python-jwcrypto): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat OpenShift AI (RHOAI) (rhoai/odh-feature-server-rhel9): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat OpenShift AI (RHOAI) (rhoai/odh-kserve-storage-initializer-rhel9): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat OpenStack Platform 16.2 (rhosp-rhel8/openstack-mistral-executor): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat OpenStack Platform 16.2 (rhosp-rhel8/openstack-nova-api): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat OpenStack Platform 16.2 (rhosp-rhel8/openstack-nova-compute-ironic): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat OpenStack Platform 16.2 (rhosp-rhel8/openstack-novajoin-base): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat OpenStack Platform 16.2 (rhosp-rhel8/openstack-novajoin-notifier): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat OpenStack Platform 16.2 (rhosp-rhel8/openstack-novajoin-server): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat OpenStack Platform 16.2 (rhosp-rhel8/openstack-tempest): Version range not reported. Source: CNA: redhat - Red Hat / Red Hat OpenStack Platform 16.2 (rhosp-rhel8/openstack-tripleoclient): Version range not reported. Source: CNA: redhat ## Severity and prioritization - CVSS 3.1: 5.9 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H; source: CNA: redhat - CISA KEV: No listing in collected sources - EPSS: 0.41% as of 2026-11-05; percentile 35.11% - SSVC: exploitation poc; automatable no; technical impact partial; source ADP: CISA-ADP - Weaknesses: CWE-770 ## Exploit evidence - exploit: https://github.com/latchset/jwcrypto/security/advisories/GHSA-96rv-c4vc-h4f4 (ADP: CISA-ADP) ## References - https://access.redhat.com/security/cve/CVE-2026-80179 (CNA: redhat; vdb-entry, x_refsource_REDHAT) - https://bugzilla.redhat.com/show_bug.cgi?id=2524147 (CNA: redhat; issue-tracking, x_refsource_REDHAT) - https://github.com/latchset/jwcrypto/security/advisories/GHSA-96rv-c4vc-h4f4 (CNA: redhat) - https://github.com/latchset/jwcrypto/security/advisories/GHSA-96rv-c4vc-h4f4 (ADP: CISA-ADP; exploit) ## Provenance - CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-80179; retrieved 2026-11-06; source updated 2026-11-06 - FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-80179; retrieved 2026-11-06; source updated Not reported Revision: 8d7f90b2173ea33a09b9f769d5d883dc7057e48364fcbed51e505471f1b1a193 Canonical: https://y2.dev/cve/CVE-2026-80179 ## Agent and API access Public CVE pages, Markdown, and JSON are free to read without an account or API key. - Public catalog: https://y2.dev/cve/index.json. 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