CVE-2023-6927
Keycloak: open redirect via "form_post.jwt" jarm response mode
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
A flaw was found in Keycloak. This issue may allow an attacker to steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt" which could be used to bypass the security patch implemented to address CVE-2023-6134.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | Medium4.6 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N |
| NVDNVD · Modified | 3.1 | Medium6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 1.1% · top 34% of all CVEs (6 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.6.
Weakness
Affected products
Red Hat · Red Hat build of Keycloak 22
- unaffected 22-7 – < *
Red Hat · Red Hat build of Keycloak 22.0.8
All versions: unaffected
Red Hat · Red Hat Single Sign-On 7
All versions: unaffected
Red Hat · Red Hat Single Sign-On 7.6 for RHEL 7
- unaffected 0:18.0.11-3.redhat_00001.1.el7sso – < *
Red Hat · Red Hat Single Sign-On 7.6 for RHEL 7
- unaffected 0:18.0.12-1.redhat_00001.1.el7sso – < *
Red Hat · Red Hat Single Sign-On 7.6 for RHEL 8
- unaffected 0:18.0.11-3.redhat_00001.1.el8sso – < *
Red Hat · Red Hat Single Sign-On 7.6 for RHEL 8
- unaffected 0:18.0.12-1.redhat_00001.1.el8sso – < *
Red Hat · Red Hat Single Sign-On 7.6 for RHEL 9
- unaffected 0:18.0.11-3.redhat_00001.1.el9sso – < *
Red Hat · Red Hat Single Sign-On 7.6 for RHEL 9
- unaffected 0:18.0.12-1.redhat_00001.1.el9sso – < *
Red Hat · RHEL-8 based Middleware Containers
- unaffected 7.6-39 – < *
Red Hat · RHEL-8 based Middleware Containers
- unaffected 7.6-41 – < *
Red Hat · Single Sign-On 7.6.6
All versions: unaffected
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.keycloak:keycloak-coreGHSA-9vm7-v8wj-3fqw (opens in a new tab)
What to do
Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
References (14)
- RHSA-2024:0094 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0095 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0096 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0097 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0098 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0100 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0101 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0798 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0799 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0800 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0801 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0804 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://access.redhat.com/security/cve/CVE-2023-6927 (opens in a new tab)vdb-entryx_refsource_REDHATx_transferred
- RHBZ#2255027 (opens in a new tab)issue-trackingx_refsource_REDHATx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-9vm7-v8wj-3fqw (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-6927)Record last updated .