← CVE Radar
CVE-2026-123207LibreTV before v2.21.2 SSRF Protection Bypass via DNS Rebinding
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.
2.3 LOWEPSS 0.23%Not in KEVNVD: Received
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 2.3 | LOW | 4.0VulnCheck (CNA) | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N |
| 3.1 | LOW | 3.1VulnCheck (CNA) | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
Details
- CVE ID
- CVE-2026-123207
- Status
- Received
- Assigner (CNA)
- VulnCheck
- Published
- Nov 5, 2026
- Last modified
- 2026-11-05 19:17 UTC
- Weaknesses
- CWE-367 · Time-of-check Time-of-use (TOCTOU) Race Condition
Affected Products
As published by the CNA in the CVE record.
LibreSparkLibreTV1 version range
- before v2.21.2
References
- github.com https://github.com/LibreSpark/LibreTV/blob/29cbeb3d37b4876f909a0354087a3531af0447f6/src/lib/ssrf.ts#L56-L85
- github.com https://github.com/LibreSpark/LibreTV/commit/cb4219368b7f6502387a703ef2a781ba763da2b1
- github.com https://github.com/LibreSpark/LibreTV/issues/941
- github.com https://github.com/LibreSpark/LibreTV/pull/960
- github.com https://github.com/LibreSpark/LibreTV/releases/tag/v2.21.2
- vulncheck.com https://www.vulncheck.com/advisories/libretv-before-2.21.2-ssrf-protection-bypass-via-dns-rebinding