High 8.6Published Jun 29, 2026

CVE-2026-56285Nitter - Server-Side Request Forgery in /video Media Proxy Endpoint

Updated under an hour ago (Oct 26, 2026, 3:50 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for zedeus nitter

Exploited in the last 30 days

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.

CVSS: 8.6 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Weakness (CWE): CWE-918, CWE-1188
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Jul 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

zedeus nitter zedeus:nitter (from the name)	before 44b2f096f67da2cc257a0e262a94a7ae79e95d47	CNA record

References

References

https://github.com/zedeus/nitter/issues/1411	issue-tracking
https://github.com/zedeus/nitter/commit/44b2f096f67da2cc257a0e262a94a7ae79e95d47	patch
https://www.vulncheck.com/advisories/nitter-server-side-request-forgery-in-video-media-proxy-endpoint	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.