Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Keycloak (Maven package org.keycloak:keycloak-core) versions up to and including 26.1.2 are affected. A privileged attacker with admin console access can enter a malicious payload as a permission name while creating resources and permissions, which can lead to stored cross-site scripting. No fix is listed in the source.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 3.8 | Low | 3.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N | CNA (redhat) |
- CISA KEV Not listed.
- EPSS 0.0030, the 23rd percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:18 UTC First seen by agentprime
- 31 Oct 2026, 14:18 UTC Confirmed by OSV