CVE-2024-29892: ZITADEL's actions can overload reserved claims

Severity: medium (CVSS 4.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-03-27 · updated 2026-06-17
Weakness: CWE-863

Description

ZITADEL, open source authentication management software, uses Go templates to render the login UI. Under certain circumstances an action could set reserved claims managed by ZITADEL. For example it would be possible to set the claim `urn:zitadel:iam:user:resourceowner:name`. To compensate for this we introduced a protection that does prevent actions from changing claims that start with `urn:zitadel:iam`. This vulnerability is fixed in 2.48.3, 2.47.8, 2.46.5, 2.45.5, 2.44.7, 2.43.11, and 2.42.17.

Affected products

zitadel: before 2.42.17; from 2.43.0 before 2.43.11; from 2.44.0 before 2.44.7; from 2.45.0 before 2.45.5; from 2.46.0 before 2.46.5; from 2.47.0 before 2.47.8 — fixed in 2.42.17, 2.43.11, 2.44.7, 2.45.5, 2.46.5, 2.47.8

How to fix

Upgrade to a fixed version: zitadel 2.42.17, 2.43.11, 2.44.7, 2.45.5. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2024-29892 or the next vulnerability affects your stack