https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-19T19:32:09.685001+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/euvd-2026-6189 EUVD-2026-6189 2026-10-19T19:32:09.689193+00:00 EUVD-2026-6189 https://cve.radiocsirt.org/vuln/fkie_cve-2024-39683 fkie_cve-2024-39683 2026-10-19T19:32:09.689227+00:00

ZITADEL is an open-source identity infrastructure tool. ZITADEL provides users the ability to list all user sessions of the current user agent (browser). Starting in version 2.53.0 and prior to versions 2.53.8, 2.54.5, and 2.55.1, due to a missing check, user sessions without that information (e.g. when created though the session service) were incorrectly listed exposing potentially other user's sessions. Versions 2.55.1, 2.54.5, and 2.53.8 contain a fix for the issue. There is no workaround since a patch is already available.

 https://cve.radiocsirt.org/vuln/ghsa-cvw9-c57h-3397 GHSA-cvw9-c57h-3397 — ZITADEL Vulnerable to Session Information Leakage 2026-10-19T19:32:09.689261+00:00

Affected: Go: github.com/zitadel/zitadel

### Impact

ZITADEL provides users the ability to list all user sessions of the current user agent (browser) by API and in the Console UI.

Due to a missing check, user sessions without that information (e.g. when created though the session service) were incorrectly listed exposing potentially other user's sessions.

Note that the Login UI was never affected and there was no possibility to take over such a session.

### Patches

2.x versions are fixed on >= [2.55.1](https://github.com/zitadel/zitadel/releases/tag/v2.55.1) 2.54.x versions are fixed on >= [2.54.5](https://github.com/zitadel/zitadel/releases/tag/v2.54.5) 2.53.x versions are fixed on >= [2.53.8](https://github.com/zitadel/zitadel/releases/tag/v2.53.8)

ZITADEL recommends upgrading to the latest versions available in due course.

### Workarounds

There is no workaround since a patch is already available.

### References

- https://github.com/zitadel/zitadel/pull/8231 - https://discord.com/channels/927474939156643850/1254096852937347153 - https://github.com/zitadel/zitadel/issues/8213

### Questions If you have any questions or comments about this advisory, please email us at [security@zitadel.com](mailto:security@zitadel.com)

### Credits Thanks to @cybertransformer, @Avolicious, @AmirhoseinBrz and @srividyaj for finding and reporting the vulnerability.