CVE-2023-44400: Uptime Kuma has Persistentent User Sessions

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-10-09 · updated 2026-06-17
Weakness: CWE-384

Description

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.

Affected products

Uptime.Kuma Uptime Kuma: before 1.23.3 — fixed in 1.23.3

How to fix

Upgrade to a fixed version: Uptime.Kuma Uptime Kuma 1.23.3. Check the vendor advisory for mitigations.

References

https://github.com/louislam/uptime-kuma/commit/88afab6571ef7d4d41bb395cdb6ecd3968835a4a
https://github.com/louislam/uptime-kuma/issues/3481
https://github.com/louislam/uptime-kuma/security/advisories/GHSA-g9v2-wqcj-j99g
https://github.com/louislam/uptime-kuma/commit/88afab6571ef7d4d41bb395cdb6ecd3968835a4a
https://github.com/louislam/uptime-kuma/issues/3481
https://github.com/louislam/uptime-kuma/security/advisories/GHSA-g9v2-wqcj-j99g

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