CVE-2026-107449

State: Published
Severity: 3.4 Low
Published: Oct 8, 2026
Updated: Oct 8, 2026
Reserved: Oct 8, 2026

Description

linuxserver Heimdall through 2.8.3 applies its SafeUrlFetcher SSRF protection mechanism only to ItemController; the enhanced-application test and live-stats requests occur via SupportedApps::execute(), a GuzzleHttp client that lacks IP address restrictions. In some realistic installations, the POST /test_config (and GET /get_stats) endpoints are accessible through CSRF, and thus an unauthenticated attacker can force the server to send requests to arbitrary internal hosts and ports (including 169.254.169.254) and read a status/port oracle in addition to partial response data.

Scores

CVSS	Score	Vector	Source
3.1	3.4 Low	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N	mitre

Weaknesses

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
Heimdalllinuxserver	2.8.3 and earlierAffected

References

https://github.com/kashishtopi/heimdall-unauth-ssrfexploittechnical-description
https://github.com/linuxserver/Heimdall/blob/9ad5864a80d7025db1e6eab8eb2981c165b0ddff/app/SupportedApps.phpproduct

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