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Signals Exploited in the wild (KEV) 0 Patch available 2 No fix listed 0 Has CVE 2

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Weakness (CWE) CWE-639 Authorization Bypass Through User-Controlled Key 1 CWE-918 Server-Side Request Forgery 1

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Release: Headroom 0.36.1 × Clear all filters

TI-2026-54168 CVE-2026-77776 · GHSA-5vg3-c628-vf56

Headroom Proxy Treats the Client-Supplied x-headroom-user-id Header as an Authenticated Identity

Priority MEDIUM 49

Headroom's LLM proxy derives the memory owner from the x-headroom-user-id request header.

CVSS 4.0CRITICAL 9.3· Network · No auth · No interaction · EPSS 0.00613 · Published 2026-08-21 · Fixed in 0.36.1 CWE-639

TI-2026-54167 CVE-2026-77775 · GHSA-4j5r-9p93-j2px

Headroom Proxy Sends Upstream Requests to a Client-Supplied Base URL Without Address Validation

Priority MEDIUM 40

Headroom's LLM proxy lets a client choose the upstream destination with the x-headroom-base-url request header.

CVSS 4.0HIGH 7.7· Network · No auth · No interaction · EPSS 0.00593 · Published 2026-08-21 · Fixed in 0.36.1 CWE-918

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