Advisory details:
github_osv / GHSA-x4p7-7chp-64hq
| Advisory ID | github_osv/GHSA-x4p7-7chp-64hq |
| Aliases |
CVE-2026-2603
|
| Summary | Keycloak: Unauthorized authentication via disabled SAML Identity Provider A flaw was found in Keycloak. A remote attacker could bypass security controls by sending a valid SAML response from an external Identity Provider (IdP) to the Keycloak SAML endpoint for IdP-initiated broker logins. This allows the attacker to complete broker logins even when the SAML Identity Provider is disabled, leading to unauthorized authentication. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 7.3 |
| Risk | 3.6 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 8.1 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-x4p7-7chp-64hq/GHSA-x4p7-7chp-64hq.json |
| generic_textual | HIGH |
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:P/A:N/T:T/P:M/B:A/M:M/D:R/2026-03-18T14:10:05Z/
Decision: Track*
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/2xxx/CVE-2026-2603.json
Source Advisory: vulnrichment/CVE-2026-2603
[{'Exploitation': 'poc'},
{'Automatable': 'no'},
{'Technical Impact': 'total'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]