Advisory details:
github_osv / GHSA-8g9r-9wjw-37j4
| Advisory ID | github_osv/GHSA-8g9r-9wjw-37j4 |
| Aliases |
CVE-2026-3429
|
| Summary | Keycloak: Improper Access Control Leading to MFA Deletion and Account Takeover in Keycloak Account REST API A flaw was identified in the Account REST API of Keycloak that allows a user authenticated at a lower security level to perform sensitive actions intended only for higher-assurance sessions. Specifically, an attacker who has already obtained a victim’s password can delete the victim’s registered MFA/OTP credential without first proving possession of that factor. The attacker can then register their own MFA device, effectively taking full control of the account. This weakness undermines the intended protection provided by multi-factor authentication. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 3.8 |
| Risk | 1.9 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| CWE-284 | Improper Access Control |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 4.2 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-8g9r-9wjw-37j4/GHSA-8g9r-9wjw-37j4.json |
| generic_textual | MODERATE |
| Reference id | Reference type | URL |
|---|---|---|
| https://github.com/keycloak/keycloak | ||
| https://github.com/keycloak/keycloak/commit/68f5779230d08825e6a4b4e23471fade16434178 | ||
| https://github.com/keycloak/keycloak/issues/47069 | ||
| CVE-2026-3429 | Advisory | https://access.redhat.com/security/cve/CVE-2026-3429 |
| CVE-2026-3429 | https://nvd.nist.gov/vuln/detail/CVE-2026-3429 | |
| RHSA-2026:6477 | Advisory | https://access.redhat.com/errata/RHSA-2026:6477 |
| RHSA-2026:6478 | Advisory | https://access.redhat.com/errata/RHSA-2026:6478 |
| show_bug.cgi?id=2443771 | Bug | https://bugzilla.redhat.com/show_bug.cgi?id=2443771 |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-12T15:43:36Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/3xxx/CVE-2026-3429.json
Source Advisory: vulnrichment/CVE-2026-3429
[{'Exploitation': 'none'},
{'Automatable': 'no'},
{'Technical Impact': 'partial'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]