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CVE-2025-51869 is an insecure direct object reference (IDOR) vulnerability in Liner, affecting versions through 2025-06-03. The issue is present in the v1/space/{space_id}/thread/{thread_id}/message/{message_id} endpoint, where access control appears to be insufficiently enforced on object identifiers supplied by the client. By crafting or manipulating the space_id, thread_id, and message_id path parameters, an attacker may be able to access message resources outside their authorized scope. The available information indicates the flaw enables unauthorized retrieval of sensitive information associated with other spaces, threads, or messages.
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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.
2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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.