CVE-2026-123207

Low

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.

SeverityLow

CVSS3.1

Exploit probability—

ProductLibreTV

PublishedNov 5, 2026

First seenNov 5, 2026

Weakness typeCWE-367CWE-367

How to fix

Update

LibreSpark LibreTVv2.21.2 or later

Patches

Vendor advisories

github.com/LibreSpark/LibreTV/releases/tag/v2.21.2

Affected products

Product	Affected versions	Fixed in
LibreSpark LibreTV	v < v2.21.2	v2.21.2

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