CVE-2026-15573
⚠️ highSummary
A flaw was found in Keycloak's Authorization Services. The component responsible for matching request paths to security policies (PathMatcher) does not properly normalize URIs before comparison. By adding extra characters like a trailing slash or matrix parameters to a URL, an attacker can trick the system into applying a less restrictive security policy than intended. This allows an authenticated user to access administrative or restricted areas they should not have permission to see.
CVSS Score
8.1
High
EPSS Score
0.3
Exploit Probability
Published Date
2026-08-05
First Seen: 2026-08-06
📊 Relative Risk Intelligence
This CVE is High Risk - more severe than 76.8% of all 348,756 vulnerabilities in our database.
#80,740
Top 25% most severe
Severity Percentile
🎯 CISA SSVC Assessment Updated: Aug 5, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Total
Complete system compromise possible
🏆 Discovered By
Red Hat would like to thank Sanil Dulal for reporting this issue.
SSVC data provided by
CISA
Last Modified
2026-08-20
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE IDs (Weakness Types)