Advisory details:
github_osv / GHSA-wcvj-vpvw-9rr5
| Advisory ID | github_osv/GHSA-wcvj-vpvw-9rr5 |
| Aliases |
CVE-2026-9689
|
| Summary | Keycloak Services has Improper Validation of Consistency within Input A flaw was found in Keycloak, an open-source identity and access management solution. When a client application is configured to accept broad redirect Uniform Resource Identifiers (URIs), a remote attacker can manipulate the authentication process by crafting a special web address. If a user clicks this link, the client application might incorrectly prioritize attacker-controlled information over legitimate data. This vulnerability, known as HTTP parameter pollution, could allow an attacker to bypass security measures or gain unauthorized access to resources. |
| 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 |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 4.2 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-wcvj-vpvw-9rr5/GHSA-wcvj-vpvw-9rr5.json |
| generic_textual | MODERATE |
| Reference id | Reference type | URL |
|---|---|---|
| https://github.com/keycloak/keycloak | ||
| https://github.com/keycloak/keycloak/commit/18832bcae5bebd5a1d66c2ec5fcd640e576fa625 | ||
| https://github.com/keycloak/keycloak/commit/1f58a4b79a258bcf2ef86b58fbf0016cdb91291f | ||
| https://github.com/keycloak/keycloak/commit/267a1a33d4dc1eac7622614ba9772b4e1e35726f | ||
| https://github.com/keycloak/keycloak/issues/49430 | ||
| https://github.com/keycloak/keycloak/pull/49959 | ||
| CVE-2026-9689 | Advisory | https://access.redhat.com/security/cve/CVE-2026-9689 |
| CVE-2026-9689 | https://nvd.nist.gov/vuln/detail/CVE-2026-9689 | |
| RHSA-2026:50846 | Advisory | https://access.redhat.com/errata/RHSA-2026:50846 |
| RHSA-2026:50847 | Advisory | https://access.redhat.com/errata/RHSA-2026:50847 |
| RHSA-2026:50848 | Advisory | https://access.redhat.com/errata/RHSA-2026:50848 |
| RHSA-2026:50849 | Advisory | https://access.redhat.com/errata/RHSA-2026:50849 |
| show_bug.cgi?id=2481845 | Bug | https://bugzilla.redhat.com/show_bug.cgi?id=2481845 |
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/2026-05-27T14:45:36Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/9xxx/CVE-2026-9689.json
Source Advisory: vulnrichment/CVE-2026-9689
[{'Exploitation': 'none'},
{'Automatable': 'no'},
{'Technical Impact': 'partial'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]