CVE-2026-86118

MEDIUM 4.3

gonic before 0.22.0 Missing Administrator Check on the Subsonic startScan Endpoint

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

gonic versions before 0.22.0 fail to validate administrator privileges in the startScan endpoint, allowing any authenticated user to trigger media library rescans. Attackers can repeatedly call the startScan endpoint to force CPU and I/O-intensive filesystem operations, causing denial of service on multi-user instances.

CWE	CWE-862
Vendor	sentriz
Product	gonic
Published	Sep 5, 2026
Last Updated	Sep 8, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Affected Versions

sentriz / gonic

0 < 0.22.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/sentriz/gonic/security/advisories/GHSA-453r-pgfw-h3pq github.com: https://github.com/sentriz/gonic/blob/v0.21.0/server/ctrlsubsonic/handlers_common.go github.com: https://github.com/sentriz/gonic/blob/v0.21.0/server/ctrlsubsonic/ctrl.go github.com: https://github.com/sentriz/gonic/releases/tag/v0.22.0 github.com: https://github.com/sentriz/gonic vulncheck.com: https://www.vulncheck.com/advisories/gonic-before-0.22.0-missing-administrator-check-on-the-subsonic-startscan-endpoint

Credits

🔍 George Chen