9.3

CVE-2026-29191: zitadel Cross-site Scripting

CVSS: 9.3v3.1CriticalAnalyzed
AliasesGHSA-pr34-2v5x-6qjqGO-2026-4607
Published 07-03-2026Last modified 09-03-2026
Open JSON

Vulnerability summary

CVE-2026-29191 is a critical (CVSS 9.3) Cross-site Scripting vulnerability in zitadel. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 32.9% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.3/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.40%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:21483-1SUSE-SU-2026:1042-1

Timeline

  1. 07-03-2026
    PublishedVulnerability first disclosed.
  2. 09-03-2026
    Last modifiedVulnerability information updated.

Description

ZITADEL is an open source identity management platform. From version 4.0.0 to 4.11.1, a vulnerability in Zitadel's login V2 interface was discovered that allowed a possible account takeover via XSS in /saml-post Endpoint. This issue has been patched in version 4.12.0.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.40%

Chance of exploitation in the next 30 days

Percentile

33%

Versus all other CVEs

30-day change

0.00 pp

From 0.40% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.40%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Github.com/zitadel1 product
  • zitadel≥ 4.0.0, < 4.12.0 | All versions (No fix recorded)
Github.com/zitadel/zitadel1 product
  • v2≥ 4.0.0, < 4.12.0
Zitadel1 product

3 vendors · 3 products

References

3 links