CVE-2026-11837: Red Hat Enterprise Linux 10 · Link Following
Affects Red Hat Enterprise Linux 10Source CVE Database V5
Not known to be exploited · CVSS 7.3 High.
Data as of 29 Oct 2026, 19:15 UTC
Sources agree
| CNA (redhat) | CVSS 3.1 | 7.3 |
|---|---|---|
| ADP (redhat-SADP) | CVSS 3.1 | 7.3 |
- 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:HExploitation evidence
Disclosed: evidence found.
CVE published 10 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
Public exploit code: GitHub proofs of concept
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10rhc-worker-playbook | Affected– | Fixed in– |
| Red Hat Enterprise Linux 10.0 Extended Update Supportrhc-worker-playbook | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportrhc-worker-playbook | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-Onrhc-worker-playbook | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.8 Telecommunications Update Servicerhc-worker-playbook | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.8 Update Services for SAP Solutionsrhc-worker-playbook | Affected– | 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
- access.redhat.com/security/cve/CVE-2026-11837 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2487424 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-11837.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:79112 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:80508 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:82339 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:42946 (opens in a new tab)