Last Modified: Jul 28, 2026
Affected Product(s):
BIG-IP ASM
Known Affected Versions:
17.1.3.1, 17.1.3.2, 17.5.1.4, 17.5.1.5, 17.5.1.6, 21.0.0, 21.0.0.1, 21.0.0.2
Fixed In:
21.1.0.1, 21.0.0.3, 17.5.1.8, 17.1.3.4
Opened: Mar 09, 2026 Severity: 3-Major
A legitimate request is blocked with a violation "JSON data does not comply with JSON schema"
Legitimate traffic may be blocked
- Violation "JSON data does not comply with JSON schema" is set to Block - JSON content profile with JSON schema file attached - The attached JSON schema contains a "pattern" field with a specific regex
N/A
Handling of regular expressions in JSON schema was improved