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OpenAdvisories
Critical · 9.3 CVE-2026-29191 EUVD-2026-10148GHSA-pr34-2v5x-6qjqGO-2026-4607

ZITADEL: 1-Click Account Takeover via XSS in /saml-post Endpoint

Published Mar 7, 2026 · Updated Mar 9, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
zitadel zitadel >= 4.0.0, < 4.12.0 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 govulncheck-vulndb 0.0.20260723T184607-160000.1.1 openSUSE-SU-2026:21483-1
openSUSE Leap 15.6 govulncheck-vulndb 0.0.20260317T205859-150000.1.152.1 SUSE-SU-2026:1042-1

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/zitadel/zitadel >= 4.0.0, < 4.12.0 4.12.0 GHSA-pr34-2v5x-6qjq
Go github.com/zitadel/zitadel all versions — GO-2026-4607
Go github.com/zitadel/zitadel/v2 >= 4.0.0, < 4.12.0 4.12.0 GHSA-pr34-2v5x-6qjq

Advisories 2

References