Home
Trends
Vulnerabilities
News
Researchers
Why dbugs?

Pegasusmkd

#28899of 53,634
8.8Total CVSS
Vulnerabilities · 1
PT-2026-43993
8.8
2026-05-27
Red Hat · Keycloak · CVE-2026-9704
**Name of the Vulnerable Software and Affected Versions** Keycloak (affected versions not specified) **Description** An authenticated user with low privileges can achieve privilege escalation by sending an oversized JSON Web Token (JWT), which is a compact, URL-safe means of representing claims to be transferred between two parties, to the 'TokenEndpoint'. When the `subject token` exceeds 4000 characters, the system silently drops it and falls back to client credentials, granting the user the permissions of the client's service account. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.