What is CVE-2026-43986?

CVE-2026-43986 is a critical-severity vulnerability in Tautulli, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.9/10. Published 2026-06-04.

How severe is CVE-2026-43986?

Critical severity. CVSS v3 base score is 9.9 out of 10.

SSRF in Tautulli

CVE-2026-43986

Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Versions prior to 2.17.1 expose a public `/image/<hash>` route that resolves attacker-controlled entries from `image_hash_lookup` and replays them through the s…

Vulnerability class: SSRF (Server-Side Request Forgery)

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L.

Affected products

Tautulli — versions < 2.17.1

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-43986?: CVE-2026-43986 is a critical-severity vulnerability in Tautulli, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.9/10. Published 2026-06-04.
How severe is CVE-2026-43986?: Critical severity. CVSS v3 base score is 9.9 out of 10.