HOMEVULNERABILITIESCVE-2026-9791
MEDIUM

CVE-2026-9791

CWE-863Published: May 28, 2026· Updated: Jun 3, 2026

4.3
CVSS v3.1
EPSS:0.03%probability of exploitation in 30 daysPercentile:7.6th

Official Description

A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by accessing user-facing APIs, such as the account API or by requesting an OpenID Connect (OIDC) token with the 'organization' scope. This allows organization metadata to be disclosed in tokens, even after an administrator has explicitly disabled the Organizations feature, potentially leading to incorrect authorization decisions by resource servers.

NVD Source

Technical Analysis

CVE-2026-9791 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected Vendors & Products

Red Hat1 product
build of keycloak
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories

ADVISORYhttps://access.redhat.com/security/cve/CVE-2026-9791
ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=2482458

All References (2)

→
https://access.redhat.com/security/cve/CVE-2026-9791Mitigation · Vendor Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=2482458Issue Tracking · Vendor Advisory

Quick Facts

CVE IDCVE-2026-9791
CVSS Score4.3 / 10
SeverityMEDIUM
WeaknessCWE-863
CISA KEVNo
EPSS (30d)0.03%
Affected1 vendor
PublishedMay 28, 2026

Related CVEs (CWE-863)

CVE-2026-44330
10.0
CVE-2026-48286
10.0
CVE-2026-48303
10.0
CVE-2026-41283
9.9
CVE-2026-33579
9.9
CVE-2026-27112
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-9791 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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