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CVE-2026-13149VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.2 security update

Affects Red HatSource GCVE Database

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Authoritative record:CVE-2026-13149· High 7.7

Public exploit available · CVSS 7.7 High.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 4.0 base score
7.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 30% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    CVSS exploit maturity: proof of concept public

  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), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
juliangruberbrace-expansionAffected
  • <=5.0.6
Fixed in–
npmbrace-expansionpkg:npm/brace-expansionOther threatsAffected
  • <=5.0.6
Fixed in–
npmbrace-expansionpkg:npm/brace-expansionOther threatsAffected
  • <=5.0.6
Fixed in–

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

AI-suggested

There is currently no practical mitigation for this vulnerability. The brace-expansion package is typically a transitive dependency, making isolation difficult. Users should monitor Red Hat advisories and upgrade to a fixed version of brace-expansion when it becomes available.

Description

A denial of service vulnerability exists in the brace-expansion npm package used by Red Hat Ansible Automation Platform 2.2. The expand() function can be exploited with specially crafted input containing consecutive non-expanding brace groups, causing exponential-time complexity and significant CPU consumption, leading to event-loop blocking and denial of service. No practical mitigation currently exists, and users are advised to upgrade to a fixed version when available.

References

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