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CVE-2026-15571VulnerabilityPublished Updated

Bundesamt für Sicherheit in der Informationstechnik IBM · Keycloak: Mehrere Schwachstellen

Affects Bundesamt für Sicherheit in der Informationstechnik IBMSource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-15571· High 7.3

Not known to be exploited · CVSS 7.3 High.

Data as of 13 Nov 2026, 11:52 UTC

CVSS 3.1 base score
7.3High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 37% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red HatRed Hat build of Keycloak 26.6Affected–Fixed in–
Red HatRed Hat build of Keycloak 26.6Affected–Fixed in–
Red HatRed Hat build of Keycloak 26.6.6Affected–Fixed in–
Red HatRed Hat Data Grid 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform Expansion PackAffected–Fixed in–
Red HatRed Hat Single Sign-On 7Affected–Fixed in–

AI-suggested

A fixed version, Keycloak 26.7.2, is available and should be applied promptly. Red Hat has released updated images and packages addressing these vulnerabilities. Before updating, back up all existing installations, including applications, configuration files, and databases. No alternative mitigations or temporary fixes are indicated in the vendor advisories.

Description

Multiple critical vulnerabilities have been identified in Keycloak, an identity and access management solution enabling single sign-on for modern applications. These include a predictable account-linking hash that allows account takeover via a malicious OIDC client, disclosure of hidden group metadata without proper permissions, leakage of rotated client secrets through the Admin REST API, unauthenticated account takeover via reset-credentials flow bypass, and a privilege escalation vulnerability due to a TOCTOU race condition. Red Hat has released fixed versions to address these issues.

References

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