Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-11837
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support — Ansible-collection-ansible-posix: ansible.posix authorized_key: local privilege escalation via symlink-following chown
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L R U H H H 7.3 .0016 5.2 —
AFFECTED
Product Versions Fixed
Red Hat Enterprise Linux 10.0 Extended Update Support unspecified 0:0.2.3-6.el10_0.2
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support unspecified 0:0.1.8-2.el8_6.1
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On unspecified 0:0.1.8-2.el8_6.1
Red Hat Enterprise Linux 8.8 Telecommunications Update Service unspecified 0:0.1.8-5.el8_8.1
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions unspecified 0:0.1.8-5.el8_8.1
Red Hat Enterprise Linux 10 unspecified —
Red Hat Enterprise Linux 10 unspecified —
Red Hat Enterprise Linux 8 unspecified —
Red Hat Enterprise Linux 8 unspecified —
Red Hat Enterprise Linux 9 unspecified —
+ 3 more
TIMELINE
Jun 10 Reserved by redhat
Jun 10 Published (CNA: redhat)
Oct 8 PATCH SHIPPED — CVE-2026-11837 (Red Hat Enterprise Linux 10.0 Extended Update Support). Fixed in Red Hat Enterprise Linux 10.0 Extended Update Support 0:0.2.3-6.el10_0.2.
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| June 10, 2026 | Reserved | Reserved by redhat |
| June 10, 2026 | Published | Published (CNA: redhat) |
| October 8, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-11837 (Red Hat Enterprise Linux 10.0 Extended Update Support). Fixed in Red Hat Enterprise Linux 10.0 Extended Update Support 0:0.2.3-6.el10_0.2. |
Affected
Affected products and packages — 13 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | — | — | 0:0.2.3-6.el10_0.2 |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | — | — | 0:0.1.8-2.el8_6.1 |
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | — | — | 0:0.1.8-2.el8_6.1 |
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | — | — | 0:0.1.8-5.el8_8.1 |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | — | — | 0:0.1.8-5.el8_8.1 |
| Red Hat | Red Hat Enterprise Linux 10 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 10 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | — |
| Red Hat | Red Hat OpenStack Platform 17.1 | — | — | — |
| Red Hat | Red Hat OpenStack Platform 18.0 | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-11837 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
