CVE detail
CVE-2026-42999
An issue was discovered in OpenStack Keystone before 29.0.2. The Keystone RBAC policy enforcer in enforce_call unconditionally merges the raw JSON request body into the policy enforcement dictionary via policy_dict.update(json_input.copy()), overwriting trusted target data that was previously set from database lookups. Because flask.request.get_json is called with force=True, this works regardless of Content-Type or HTTP method. Any authenticated user can inject arbitrary policy target attributes (e.g., user_id, project_id) into the request body to bypass RBAC checks and perform unauthorized operations on resources belonging to other users or projects. This was introduced in commit 5ea59f52 (Rocky/14.0.0).
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 17.9 · diversity 14.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
5 source links · newest first
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42999.jsonsecurity.access.redhat.com
No excerpt available.
Vendor Advisorysecurity.access.redhat.comMay 28, 2026, 7:16 PM - https://bugzilla.redhat.com/show_bug.cgi?id=2482840bugzilla.redhat.com
No excerpt available.
Exploitbugzilla.redhat.comMay 28, 2026, 7:16 PM - https://access.redhat.com/security/cve/CVE-2026-42999access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMay 28, 2026, 7:16 PM - https://security.openstack.org/ossa/OSSA-2026-015.htmlsecurity.openstack.org
No excerpt available.
Vendor Advisorysecurity.openstack.orgMay 28, 2026, 7:16 PM - https://bugs.launchpad.net/keystone/+bug/2148398bugs.launchpad.net
No excerpt available.
Exploitbugs.launchpad.netMay 28, 2026, 7:16 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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