What is CVE-2023-23636?

CVE-2023-23636 is a medium-severity vulnerability in Jellyfin, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2023-02-03.

How severe is CVE-2023-23636?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Jellyfin

CVE-2023-23636

In Jellyfin 10.8.x through 10.8.3, the name of a playlist is vulnerable to stored XSS. This allows an attacker to steal access tokens from the localStorage of the victim.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-02-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (48.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Jellyfin

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

herolab.usd.de/security-advisories/ (Third Party Advisory)
github.com/jellyfin/jellyfin-web/issues/3788 (Exploit, Patch, Third Party Advisory, Issue Tracking)
herolab.usd.de/security-advisories/usd-2022-0030/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-23636?: CVE-2023-23636 is a medium-severity vulnerability in Jellyfin, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2023-02-03.
How severe is CVE-2023-23636?: Medium severity. CVSS v3 base score is 5.4 out of 10.