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CVE-2026-9799 is an authorization flaw in org.keycloak.authorization in Keycloak. An authenticated user who has been granted a valid User-Managed Access (UMA) permission ticket for one resource can abuse a specific permission request prefix to bypass per-resource access control checks. Successful exploitation allows the user to extend access beyond the originally authorized resource and obtain access to other resources of the same type within the same resource server. The issue affects typed resources with ownerManagedAccess enabled when the resource server is configured in PERMISSIVE policy enforcement mode and there is no explicit policy protecting the resource type. The vulnerability results from improper enforcement of resource-scoped authorization boundaries during UMA permission evaluation.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
4 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.