Red Hat Security Advisory: Red Hat OpenStack Platform 17.1 (python-h11) security update
A security advisory from Red Hat addresses a vulnerability in the Ansible Automation Platform 2.4 container release. The issue involves the ansible-lightspeed-container component, specifically the h11 HTTP library accepting some malformed Chunked-Encoding bodies (CVE-2025-43859). This vulnerability has been fixed in an update that also includes an updated ansible.controller collection version 4.5.23. The advisory covers multiple architectures and Red Hat Enterprise Linux 8 and 9 versions.
AI Analysis
Technical Summary
CVE-2025-43859 is a vulnerability in the python-h11 HTTP library component used by Red Hat OpenStack Platform 17.1. The flaw allows h11 to accept certain malformed Chunked-Encoding bodies, which is a deviation from expected HTTP protocol behavior. This vulnerability is tracked under CWE-444. Red Hat has acknowledged the issue and issued a security advisory (RHSA-2025:7536) with an update for python-h11 to fix this problem. The advisory rates the security impact as Important and provides updated packages for Red Hat OpenStack Platform 17.1 on RHEL 9 x86_64. No CVSS score is provided in the advisory or CVE details.
Potential Impact
The vulnerability allows the h11 HTTP library to accept malformed Chunked-Encoding bodies, which could potentially lead to unexpected behavior in HTTP message processing within Red Hat OpenStack Platform 17.1. The exact impact details and exploitation scenarios are not explicitly described in the advisory or CVE information. The security impact is rated as Important by Red Hat Product Security.
Mitigation Recommendations
Red Hat has released an updated python-h11 package for Red Hat OpenStack Platform 17.1 to address this vulnerability. Users should apply the official security update as described in the Red Hat advisory RHSA-2025:7536. For detailed update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation steps are indicated or required beyond applying the provided update.
Red Hat Security Advisory: Red Hat OpenStack Platform 17.1 (python-h11) security update
Description
A security advisory from Red Hat addresses a vulnerability in the Ansible Automation Platform 2.4 container release. The issue involves the ansible-lightspeed-container component, specifically the h11 HTTP library accepting some malformed Chunked-Encoding bodies (CVE-2025-43859). This vulnerability has been fixed in an update that also includes an updated ansible.controller collection version 4.5.23. The advisory covers multiple architectures and Red Hat Enterprise Linux 8 and 9 versions.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-43859 is a vulnerability in the python-h11 HTTP library component used by Red Hat OpenStack Platform 17.1. The flaw allows h11 to accept certain malformed Chunked-Encoding bodies, which is a deviation from expected HTTP protocol behavior. This vulnerability is tracked under CWE-444. Red Hat has acknowledged the issue and issued a security advisory (RHSA-2025:7536) with an update for python-h11 to fix this problem. The advisory rates the security impact as Important and provides updated packages for Red Hat OpenStack Platform 17.1 on RHEL 9 x86_64. No CVSS score is provided in the advisory or CVE details.
Potential Impact
The vulnerability allows the h11 HTTP library to accept malformed Chunked-Encoding bodies, which could potentially lead to unexpected behavior in HTTP message processing within Red Hat OpenStack Platform 17.1. The exact impact details and exploitation scenarios are not explicitly described in the advisory or CVE information. The security impact is rated as Important by Red Hat Product Security.
Mitigation Recommendations
Red Hat has released an updated python-h11 package for Red Hat OpenStack Platform 17.1 to address this vulnerability. Users should apply the official security update as described in the Red Hat advisory RHSA-2025:7536. For detailed update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation steps are indicated or required beyond applying the provided update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:8615
- Cve Count
- 1
Threat ID: 6a4049e327e9c797198330f5
Added to database: 06/27/2026, 22:08:35 UTC
Last enriched: 08/16/2026, 18:48:13 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 18
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