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CVE-2026-40898VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.7 Product Security and Bug Fix Update

Affects Red HatSource GCVE Database

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Not known to be exploited.

Data as of 31 Oct 2026, 20:20 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS
0.3% chance of exploitation in 30 days – higher than 33% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 4 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: 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 31 Oct 2026.

What to do

AI-suggested

Red Hat has released an updated receptor package version 1.6.7 that fixes this vulnerability. Users of Red Hat Ansible Automation Platform 2.7 should apply the official update as documented in the Red Hat advisory and product documentation to remediate this issue. No additional mitigation steps are indicated beyond applying the update.

Description

A denial of service vulnerability (CVE-2026-40898) exists in the quic-go component used by Red Hat Ansible Automation Platform 2.7. The flaw involves excessive memory allocation triggered via HTTP/3 trailers, which can cause service disruption. Red Hat has issued a security update addressing this issue in version 1.6.7 of the receptor package. The vulnerability is rated as having high severity by Red Hat Product Security.

References

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