---
id: CVE-2026-80179
title: 'Jwcrypto: jwcrypto: denial of service via malformed jwe tokens'
summary: >-
  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
  memor…
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-770
vendor: Red Hat
product: ansible-automation-platform-24/controller-rhel8
affected:
  - ansible-automation-platform-24/controller-rhel8 (all versions)
  - ansible-automation-platform-24/lightspeed-rhel8 (all versions)
  - ansible-automation-platform-25/controller-rhel8 (all versions)
  - ansible-automation-platform-25/gateway-rhel8 (all versions)
  - ansible-automation-platform-25/lightspeed-rhel8 (all versions)
  - ansible-automation-platform-26/controller-rhel9 (all versions)
  - ansible-automation-platform-26/gateway-rhel9 (all versions)
  - ansible-automation-platform-26/lightspeed-rhel9 (all versions)
  - ansible-automation-platform-27/gateway-rhel9 (all versions)
  - ansible-automation-platform-27/lightspeed-rhel9 (all versions)
  - automation-controller (all versions)
  - python3.11-jwcrypto (all versions)
  - python3.12-jwcrypto (all versions)
  - python-jwcrypto (all versions)
  - python-jwcrypto (all versions)
  - rhoai/odh-feature-server-rhel9 (all versions)
  - rhoai/odh-kserve-storage-initializer-rhel9 (all versions)
  - rhosp-rhel8/openstack-mistral-executor (all versions)
  - rhosp-rhel8/openstack-nova-api (all versions)
  - rhosp-rhel8/openstack-nova-compute-ironic (all versions)
  - rhosp-rhel8/openstack-novajoin-base (all versions)
  - rhosp-rhel8/openstack-novajoin-notifier (all versions)
  - rhosp-rhel8/openstack-novajoin-server (all versions)
  - rhosp-rhel8/openstack-tempest (all versions)
  - rhosp-rhel8/openstack-tripleoclient (all versions)
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-08-28T15:33:23.609206Z'
exploitAvailable: true
published: '2026-08-27'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T17:11:03.875Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-80179'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80179'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2524147'
    label: RHBZ#2524147
  - url: >-
      https://github.com/latchset/jwcrypto/security/advisories/GHSA-96rv-c4vc-h4f4
tags:
  - cve.org
  - exploit-available
epss: 0.00407
epssPercentile: 0.32117
ingestedAt: '2026-09-09T18:17:58.317Z'
---

## Overview

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.

## Affected

- `ansible-automation-platform-24/controller-rhel8 (all versions)`
- `ansible-automation-platform-24/lightspeed-rhel8 (all versions)`
- `ansible-automation-platform-25/controller-rhel8 (all versions)`
- `ansible-automation-platform-25/gateway-rhel8 (all versions)`
- `ansible-automation-platform-25/lightspeed-rhel8 (all versions)`
- `ansible-automation-platform-26/controller-rhel9 (all versions)`
- `ansible-automation-platform-26/gateway-rhel9 (all versions)`
- `ansible-automation-platform-26/lightspeed-rhel9 (all versions)`
- `ansible-automation-platform-27/gateway-rhel9 (all versions)`
- `ansible-automation-platform-27/lightspeed-rhel9 (all versions)`
- `automation-controller (all versions)`
- `python3.11-jwcrypto (all versions)`
- `python3.12-jwcrypto (all versions)`
- `python-jwcrypto (all versions)`
- `python-jwcrypto (all versions)`
- `rhoai/odh-feature-server-rhel9 (all versions)`
- `rhoai/odh-kserve-storage-initializer-rhel9 (all versions)`
- `rhosp-rhel8/openstack-mistral-executor (all versions)`
- `rhosp-rhel8/openstack-nova-api (all versions)`
- `rhosp-rhel8/openstack-nova-compute-ironic (all versions)`
- `rhosp-rhel8/openstack-novajoin-base (all versions)`
- `rhosp-rhel8/openstack-novajoin-notifier (all versions)`
- `rhosp-rhel8/openstack-novajoin-server (all versions)`
- `rhosp-rhel8/openstack-tempest (all versions)`
- `rhosp-rhel8/openstack-tripleoclient (all versions)`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

### Workarounds

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.