CVE-2026-56285
Nitter's /video media proxy endpoint fails to validate target URLs against Twitter/X domains and uses a hardcoded default HMAC key, allowing
CVSS
8.6
Alto
EPSS
0.4%
p28
KEV
—
Exploit Today
8
0-100
Publicado: 29 jun 2026 · Última mod.: 14 jul 2026 · CWE-918 · CWE-1188
0.4%EPSS · 30 días0.4%
2026-06-302026-07-16
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.
- github.comhttps://github.com/zedeus/nitter/commit/44b2f096f67da2cc257a0e262a94a7ae79e95d47
- github.comhttps://github.com/zedeus/nitter/issues/1411
- www.vulncheck.comhttps://www.vulncheck.com/advisories/nitter-server-side-request-forgery-in-video-media-proxy-endpoint
- github.comhttps://github.com/zedeus/nitter/issues/1411
CVECVSSEPSSKEVRExplotTítuloVis.
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