CVE-2026-11837— Ansible-collection-ansible-posix: ansible.posix authorized_key: local privilege escalation via symlink-following chown
Quick assessment
Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Ansible是Ansible开源的一款简单易用的IT自动化系统。 Ansible存在后置链接漏洞，该漏洞源于Posix authorized_key模块，keyfile函数使用os.chown而非os.lchown且未使用O_NOFOLLOW打开文件，可能导致非特权本地用户通过符号链接重定向文件所有权更改。
In-the-Wild Activity Observed
github_trending · low
Possible ATT&CK Techniques 1 AI
T1068 · Exploitation for Privilege EscalationAffected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | any |
affected |
any |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 8 | any |
affected |
any |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 9 | any |
affected |
any |
unaffected | ||
| Red Hat | Red Hat OpenStack Platform 17.1 | any |
affected |
| Red Hat | Red Hat OpenStack Platform 18.0 | any |
unaffected |
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I. Basic Information for CVE-2026-11837
Vulnerability Information
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Vulnerability Title
Ansible-collection-ansible-posix: ansible.posix authorized_key: local privilege escalation via symlink-following chown
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
Ansible 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ansible是Ansible开源的一款简单易用的IT自动化系统。 Ansible存在后置链接漏洞，该漏洞源于Posix authorized_key模块，keyfile函数使用os.chown而非os.lchown且未使用O_NOFOLLOW打开文件，可能导致非特权本地用户通过符号链接重定向文件所有权更改。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | - |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 10 | - |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 8 | - |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 8 | - |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 | - |
cpe:/o:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat Enterprise Linux 9 | - |
cpe:/o:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat OpenStack Platform 17.1 | - |
cpe:/a:redhat:openstack:17.1
|
|
| Red Hat | Red Hat OpenStack Platform 18.0 | - |
cpe:/a:redhat:openstack:18.0
|
|
II. Public POCs for CVE-2026-11837
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-11837 (2)
Same Patch Batch · Red Hat · 2026-06-10 · 3 CVEs total
| CVE-2026-6893 | 7.5 HIGH | Dracut: dracut: root code execution via dhcp options command injection |
| CVE-2026-11884 | 6.5 MEDIUM | 389-ds-base: 389-ds-base: heap buffer overflow in schema objectclass serialization due to |
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V. Comments for CVE-2026-11837
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