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CVE-2026-8505 is an authentication flaw in IBM Langflow OSS affecting versions 1.0.0 through 1.10.0. The issue resides in webhook authentication logic that incorrectly bypasses API key validation when the WEBHOOK_AUTH_ENABLE configuration is set to False, which is the default setting. Under this condition, an unauthenticated remote attacker who knows a target flow's UUID can invoke the webhook and trigger execution of that flow as though they were its owner. Because flows may execute powerful application logic, the vulnerability can potentially lead to remote code execution depending on the flow configuration and runtime capabilities.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
8 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.