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CVE-2025-43859VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.4 Container Release Update

Affects Red Hat uvicornSource GCVE Database

0

Not known to be exploited : upgrade Red Hat uvicorn to 0.34.2_1 soon.

Data as of 26 Oct 2026, 14:05 UTC

Severity
High

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS
0.5% chance of exploitation in 30 days – higher than 48% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.34.2_1

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Jun 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade uvicorn to 0.34.2_1.

Affected software

ProductAffectedFixed in
Homebrewuvicornpkg:brew/uvicornOther threatsAffected
  • >=0.23.2 <0.34.2_1
Fixed in
  • 0.34.2_1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

Red Hat Ansible Automation Platform provides an enterprise framework for building, deploying and managing IT automation at scale. IT Managers can provide top-down guidelines on how automation is applied to individual teams, while automation developers retain the freedom to write tasks that leverage existing knowledge without the overhead. Ansible Automation Platform makes it possible for users across an organization to share, vet, and manage automation content by means of a simple, powerful, and agentless language. Security Fix(es): - ansible-lightspeed-container: h11 accepts some malformed Chunked-Encoding bodies (CVE-2025-43859) Update(s) and Fix(es): - The ansible.controller collection has been updated to 4.5.23 (AAP-46561)

References

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