CVE-2025-53895: zitadel Session Fixation — Fix

Description

ZITADEL is an open source identity management system. Starting in version 2.53.0 and prior to versions 4.0.0-rc.2, 3.3.2, 2.71.13, and 2.70.14, vulnerability in ZITADEL's session management API allows any authenticated user to update a session if they know its ID, due to a missing permission check. This flaw enables session hijacking, allowing an attacker to impersonate another user and access sensitive resources. Versions prior to `2.53.0` are not affected, as they required the session token for updates. Versions 4.0.0-rc.2, 3.3.2, 2.71.13, and 2.70.14 fix the issue.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-384 CWE-384

CWE-863 Incorrect Authorization

Affected Products

Vendor	Product	Versions
zitadel	zitadel	2.53.0 — 2.70.14
zitadel	zitadel	2.71.0 — 2.71.13
zitadel	zitadel	3.0.0 — 3.3.1
zitadel	zitadel	All

References

Advisories & Patches

https://github.com/zitadel/zitadel/security/advisories/GHSA-6c5p-6www-pcmr

Other References

https://github.com/zitadel/zitadel/releases/tag/v2.70.14 https://github.com/zitadel/zitadel/releases/tag/v2.71.13 https://github.com/zitadel/zitadel/releases/tag/v3.3.2 https://github.com/zitadel/zitadel/releases/tag/v4.0.0-rc.2

Frequently Asked Questions

What is CVE-2025-53895? +

ZITADEL is an open source identity management system. Starting in version 2.53.0 and prior to versions 4.0.0-rc.2, 3.3.2, 2.71.13, and 2.70.14, vulnerability in ZITADEL's session management API allows any authenticated user to update a session if they know its ID, due to a missing permission check. This flaw enables session hijacking, allowing an attacker to impersonate another user and access sensitive resources. Versions prior to `2.53.0` are not affected, as they required the session token for updates. Versions 4.0.0-rc.2, 3.3.2, 2.71.13, and 2.70.14 fix the issue. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2025-53895? +

CVE-2025-53895 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-53895? +

CVE-2025-53895 affects products from zitadel, specifically: zitadel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-53895? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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