What is CVE-2023-44400?

CVE-2023-44400 is a medium-severity vulnerability in Louislam Uptime-Kuma, classified under Session Fixation. CVSS score: 6.7/10. Published 2023-10-09.

How severe is CVE-2023-44400?

Medium severity. CVSS v3 base score is 6.7 out of 10.

Vulnerability in Louislam Uptime-Kuma

CVE-2023-44400

Uptime Kuma is a self-hosted monitoring tool. Prior to version 1.23.3, attackers with access to a user's device can gain persistent account access. This is caused by missing verification of Session Tokens after password changes and/or elapsed inactivity periods. Version 1.23.3 has a patch for the issue.

Published 2023-10-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (16.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 16.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Louislam Uptime-Kuma — versions < 1.23.3
Uptime.kuma Uptime Kuma

Weakness classification (CWE)

CWE-384 — Session Fixation

References

github.com/louislam/uptime-kuma/security/advisories/GHSA-g9v2-wqcj-j99g (Exploit, Vendor Advisory)
github.com/louislam/uptime-kuma/issues/3481 (Mitigation, Issue Tracking)
github.com/louislam/uptime-kuma/commit/88afab6571ef7d4d41bb395cdb6ecd3968835a4a (Patch)

Frequently asked questions

What is CVE-2023-44400?: CVE-2023-44400 is a medium-severity vulnerability in Louislam Uptime-Kuma, classified under Session Fixation. CVSS score: 6.7/10. Published 2023-10-09.
How severe is CVE-2023-44400?: Medium severity. CVSS v3 base score is 6.7 out of 10.