CVE-2026-123207 LibreTV before v2.21.2 SSRF Protection Bypass via DNS Rebinding
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-123207?
CVE-2026-123207 is a low-severity vulnerability in LibreSpark LibreTV, published on 5 Nov 2026.
Official description
LibreTV before v2.21.2 contains a server-side request forgery vulnerability that allows authenticated users to bypass checkUpstreamAllowed() by exploiting unpinned DNS resolution in fetchWithSafeRedirects(). Attackers controlling authoritative DNS can return public addresses during validation and internal addresses at connection time via /api/source/test, /api/proxy, /api/search or /api/detail to reach loopback services, private hosts or cloud metadata endpoints.
Weakness: CWE-367
Which versions are affected by CVE-2026-123207?
How do I fix CVE-2026-123207?
No fix has been published for CVE-2026-123207 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-123207 being exploited?
There is no known exploitation of CVE-2026-123207 in the wild and no public exploit code.
Sources
Also known as GHSA-55w8-f34c-fr45.