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CVE-2026-56285

7.7 high SSVC exploitation: poc Deferred
NVD · CVE.org

Nitter's /video media proxy endpoint fails to validate target URLs against Twitter/X domains and uses a hardcoded default HMAC key, allowing unauthenticated attackers to compute valid HMACs for arbitrary URLs. Attackers can retrieve HTTP responses from any host reachable by the server, including cloud metadata services and internal network resources.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 7.7NVD modified 2026-10-25 21:10

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 4