Zitadel
CVE-2026-23511
MEDIUM
GHSA-pvm5-9frx-264r
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Primary rating from GitHub Advisory.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Lifecycle Timeline
3DescriptionGitHub Advisory
ZITADEL is an open source identity management platform. Prior to 4.9.1 and 3.4.6, a user enumeration vulnerability has been discovered in Zitadel's login interfaces. An unauthenticated attacker can exploit this flaw to confirm the existence of valid user accounts by iterating through usernames and userIDs. This vulnerability is fixed in 4.9.1 and 3.4.6.
AnalysisAI
Zitadel versions prior to 4.9.1 and 3.4.6 contain a user enumeration vulnerability in their login interfaces that allows unauthenticated attackers to discover valid user accounts by testing usernames and user IDs. An attacker can leverage this information disclosure to build lists of existing users for targeted attacks against the identity management platform. The vulnerability has been patched in versions 4.9.1 and 3.4.6.
Technical ContextAI
Affects Zitadel. ZITADEL is an open source identity management platform. Prior to 4.9.1 and 3.4.6, a user enumeration vulnerability has been discovered in Zitadel's login interfaces. An unauthenticated attacker can exploit this flaw to confirm the existence of valid user accounts by iterating through usernames and userIDs. This vulnerability is fixed in 4.9.1 and 3.4.6.
RemediationAI
A vendor patch is available — apply it immediately. Fixed in version 4.9.1. Restrict network access to the affected service where possible.
Zitadel is open-source identity infrastructure software. Rated critical severity (CVSS 9.1), this vulnerability is remot
ZITADEL is an identity infrastructure system. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable
Stored XSS in ZITADEL identity management platform versions 4.0.0 to 4.11.1 allows unauthenticated attackers to inject p
The open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration. Ra
The open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration. Ra
ZITADEL combines the ease of Auth0 and the versatility of Keycloak.**Actions**, introduced in ZITADEL **1.42.0** on the
Zitadel is open-source identity infrastructure software. Rated high severity (CVSS 8.7), this vulnerability is remotely
ZITADEL users can upload their own avatar image and various image types are allowed. Rated high severity (CVSS 8.7), thi
ZITADEL is an open source identity management platform. [CVSS 8.2 HIGH]
Privilege escalation in ZITADEL identity platform (before 4.15.3) allows an attacker holding a low-privilege OAuth2 toke
ZITADEL versions 4.0.0-rc.1 through 4.7.0 are vulnerable to open redirect attacks through improper validation of the For
ZITADEL provides users the possibility to use Time-based One-Time-Password (TOTP) and One-Time-Password (OTP) through SM
Same weakness CWE-204 – Observable Response Discrepancy
View allSame technique Information Disclosure
View allVendor StatusVendor
SUSE
Severity: MediumShare
External POC / Exploit Code
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