Eclipse Grizzly in versions before 5.0.2, cannot properly parse the trailer section in…
Priority LOW 28CWE-444Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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".
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00297 22nd percentileScored 2026-11-07
Fix Fixed Eclipse GlassFish (Eclipse Foundation): 5.0.2
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Eclipse Foundation | Eclipse GlassFish | 4.0.0 – 4.0.2; 5.0.0 to before 5.0.2 | 5.0.2 | Patch available | CNA |
- Eclipse GlassFish VendorEclipse Foundation Affected 4.0.0 – 4.0.2; 5.0.0 to before 5.0.2 Fixed in 5.0.2 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:eclipse:grizzly:*:*:*:*:*:*:*:* | 4.0.0 – 4.0.2; 5.0.0 to before 5.0.2 | Vulnerable | Eclipse Foundation |
- cpe:2.3:a:eclipse:grizzly:*:*:*:*:*:*:*:* Versions 4.0.0 – 4.0.2; 5.0.0 to before 5.0.2 Vulnerable ·Eclipse Foundation
Remediation
- Fix · CNA Eclipse GlassFish (Eclipse Foundation) Fixed in 5.0.2
Timeline
- 2026-10-02 Threatist record created from CVE-2026-12606
- 2026-10-03 Alias added: GHSA-c269-4hpf-qfhc
References
Sources
- CVE-2026-12606 · CVE Program
- CVE-2026-12606 · NVD
- FIRST EPSS
- GHSA-c269-4hpf-qfhc · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences