CVE-2026-29191 json
ZITADEL: 1-Click Account Takeover via XSS in /saml-post Endpoint
published 2026-03-04 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-10148 , GHSA-pr34-2v5x-6qjq , GO-2026-4607
- cvss
- 9.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 39%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go github.com/zitadel/zitadel 4.12.0
- go github.com/zitadel/zitadel/v2 4.12.0
- zitadel zitadel 4.12.0
- govulncheck-vulndb openSUSE Leap 15.6 0.0.20260317T205859-150000.1.152.1
suse advisories SUSE-SU-2026:1042-1
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 8 mo ago
Exploit prediction
0.46% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N |
| GitHub | 3.1 | 9.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/zitadel/zitadel | >=4.0.0, <4.12.0 all versions |
4.12.0 |
| go | github.com/zitadel/zitadel/v2 | >=4.0.0, <4.12.0 |
4.12.0 |
Affected products
- zitadel zitadel
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/zitadel/zitadel/security/advisories/GHSA-pr34-2v5x-6qjq
web, patch, vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-29191
advisory
-
github.com
/zitadel/zitadel
package
Sources
- CVE List CVE-2026-29191
- GitHub Advisory GHSA-pr34-2v5x-6qjq
- NVD CVE-2026-29191
- OSV GO-2026-4607
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.