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CVE-2026-11837 is a local privilege-escalation vulnerability in the ansible.posix authorized_key module used for SSH key management. The flaw is in the module's keyfile() function, which performs ownership changes with os.chown() and opens files without protections equivalent to O_NOFOLLOW. Because os.chown() follows symbolic links, an unprivileged local user can pre-create symlinks within their ~/.ssh directory so that, when an operator runs an authorized_key task as root, the module applies ownership changes to the symlink target rather than the intended file. This can redirect privileged file operations to arbitrary sensitive system files and create a path to privilege escalation.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.