What’s Vulnerable › Vulnerabilities
CVE-2026-12606
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-14 · updated 2026-10-24
- Weakness: CWE-444
Description
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".
Affected products
- eclipse Grizzly: from 4.0.0 through 4.0.2; from 5.0.0 before 5.0.2 — fixed in 5.0.2
How to fix
Upgrade to a fixed version: eclipse Grizzly 5.0.2. Check the vendor advisory for mitigations.
References
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