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VulnerabilityPublished Updated

CVE-2026-11837: Red Hat Enterprise Linux 10 · Link Following

Affects Red Hat Enterprise Linux 10Source CVE Database V5

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Not known to be exploited · CVSS 7.3 High.

Data as of 29 Oct 2026, 19:15 UTC

CVSS 3.1 base score
7.3High
How severe the flaw is on the 0–10 CVSS scale.

Sources agree

CVSS scores by source
CNA (redhat)CVSS 3.17.3
ADP (redhat-SADP)CVSS 3.17.3
EPSS
0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  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), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10rhc-worker-playbookAffected–Fixed in–
Red Hat Enterprise Linux 10.0 Extended Update Supportrhc-worker-playbookAffected–Fixed in–
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportrhc-worker-playbookAffected–Fixed in–
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-Onrhc-worker-playbookAffected–Fixed in–
Red Hat Enterprise Linux 8.8 Telecommunications Update Servicerhc-worker-playbookAffected–Fixed in–
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutionsrhc-worker-playbookAffected–Fixed in–

AI-suggested

Until a fix is available, avoid running the ansible.posix authorized_key task as root on untrusted user directories or environments. Monitor Red Hat communications for updates on patches or workarounds.

Description

A local privilege escalation vulnerability was found in the ansible.posix authorized_key module. The module's keyfile() function uses os.chown() instead of os.lchown() and opens files without O_NOFOLLOW when managing SSH authorized keys. An unprivileged local user can pre-stage symbolic links in their ~/.ssh directory to redirect file ownership changes to arbitrary system paths when an operator runs the authorized_key task as root, leading to local privilege escalation.

References

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