Vulnerability Details CVE-2026-12606
Eclipse Grizzly in versions before 5.0.2, cannot properly parse the trailer section in malformed trailer header's line, which can be leveraged to perform HTTP request smuggling. Grizzly 5.0.1 supports system properties that enable the behavior that fixes the vulnerability - set org.glassfish.grizzly.http.STRICT_HEADER_NAME_VALIDATION_RFC_9110 and org.glassfish.grizzly.http.STRICT_HEADER_VALUE_VALIDATION_RFC_9110 system properties to "true".
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 8.6%
CVSS Severity
CVSS v3 Score 5.3
Products affected by CVE-2026-12606
-
cpe:2.3:a:eclipse:grizzly:4.0.0
-
cpe:2.3:a:eclipse:grizzly:4.0.1
-
cpe:2.3:a:eclipse:grizzly:4.0.2
-
cpe:2.3:a:eclipse:grizzly:5.0.0
-
cpe:2.3:a:eclipse:grizzly:5.0.1