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Vulnerabilities

Vulnerability · CVE-2026-4325

A flaw was found in Keycloak.

Published Apr 2, 2026 · catalog updated Jun 17, 2026 · build of keycloak

Check if you run it

No confirmed exploitation is on record for CVE-2026-4325. EPSS is 0.41%. Act only if a listed version of build of keycloak is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.41%
Remediation
Advisory link
Affected products
cpe redhat/build of keycloak

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an attacker to delete arbitrary single-use entries, which can enable the replay of consumed action tokens, such as password reset links. This could lead to unauthorized access or account compromise.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe redhat/build of keycloak26.2
  • cpe redhat/build of keycloak26.2.15
  • cpe redhat/build of keycloak26.4
  • cpe redhat/build of keycloak26.4.11

How to fix CVE-2026-4325

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-4325. EPSS is 0.41%. Act only if a listed version of build of keycloak is installed.

Which versions are affected?

Compare what you have installed with redhat/build of keycloak 26.2; redhat/build of keycloak 26.2.15; redhat/build of keycloak 26.4; redhat/build of keycloak 26.4.11. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-653. EPSS 0.41%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 2, 2026 · NIST NVD

    Detected

    A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an attacker to delete arbitrary single-use entries, which can enable the replay of consumed action tokens, such as password reset links. This could lead to unauthorized access or account compromise.

  2. Jun 17, 2026 · NIST NVD

    Updated

    A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an attacker to delete arbitrary single-use entries, which can enable the replay of consumed action tokens, such as password reset links. This could lead to unauthorized access or account compromise.

Sources

  • CVE.orgVulnerability recordCVE-2026-4325

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-4325

    30-day exploitation probability 0.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-4325

    A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an attacker to delete arbitrary single-use entries, which can enable the replay of consumed action tokens, such as password re

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.