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CVE-2026-18972 is an authenticated identity-spoofing vulnerability in Velociraptor affecting versions prior to 0.77.2. The flaw allows a logged-in attacker to impersonate another GUI user by supplying the custom request header "Grpc-Metadata-USER". Because the application trusts this header for user identity, an attacker with low privileges can cause requests to be processed as though they originated from a different user, including a more privileged account. This can result in full account takeover of administrative GUI sessions or identities.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An authenticated identity-spoofing vulnerability affecting Velociraptor versions prior to 0.77.2.
An authenticated identity-spoofing vulnerability identified as CVE-2026-18972 affecting Velociraptor.
An authentication/identity spoofing vulnerability in Velociraptor that allows a low-privileged authenticated user to impersonate another GUI user via the Grpc-Metadata-USER header, potentially leading to administrator account takeover.
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.