CVE-2026-15943
MEDIUMDescription
A flaw was found in the Keycloak keycloak-services component, which handles the management of identity providers. The issue occurs when a delegated administrator updates an OIDC identity provider using a masked client secret sentinel value. Due to improper validation, Keycloak reuses the existing real secret even if security-sensitive fields like the token URL have been changed, allowing an attacker to redirect and capture the secret.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 11% of all known CVEs.
References
Related Vulnerabilities
Other CWE-1288 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2026-31431 | Medium | 5.5 | 96% | KEV | Fix |
| CVE-2023-6245 | High | 7.5 | 1.2% | - | Fix |
| CVE-2022-39353 | Critical | 9.4 | 1.2% | - | Fix |
| CVE-2021-41531 | High | 7.5 | 0.9% | - | Fix |
| CVE-2023-1620 | Medium | 4.9 | 0.9% | - | Fix |
| CVE-2024-25951 | High | 8.0 | 0.8% | - | Fix |
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Markdown
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-17.