CVE-2026-19204
Summary
| CVE | CVE-2026-19204 |
|---|---|
| State | PUBLISHED |
| Assigner | eclipse |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-07 11:17:20 UTC |
| Updated | 2026-09-08 16:18:06 UTC |
| Description | A client may send a WebSocket frame with an unknown opcode and a very large declared payload length, causing Jetty to attempt a large memory allocation and potentially exhaust the JVM heap. This occurs when auto-fragmentation is enabled, as unknown opcodes bypass the normal maximum frame size handling and payload allocation occurs before the opcode is validated. |
Risk And Classification
Primary CVSS: v4.0 8.7 HIGH from [email protected]
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Problem Types: CWE-770 | CWE-789 | CWE-770 CWE-770 Allocation of resources without limits or throttling | CWE-789 CWE-789 Memory allocation with excessive size value
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 8.7 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/C... |
| 4.0 | CNA | CVSS | 8.7 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
CVSS v4.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowAttack Requirements
NonePrivileges Required
NoneUser Interaction
NoneConfidentiality
NoneIntegrity
NoneAvailability
HighSub Conf.
NoneSub Integrity
NoneSub Availability
NoneCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Eclipse Foundation | Eclipse Jetty | affected 12.1.0 12.1.11 semver | Not specified |
| CNA | Eclipse Foundation | Eclipse Jetty | affected 12.0.0 12.0.37 semver | Not specified |
| CNA | Eclipse Foundation | Eclipse Jetty | affected 11.0.0 11.0.31 semver | Not specified |
| CNA | Eclipse Foundation | Eclipse Jetty | affected 10.0.0 10.0.31 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/jetty/jetty.project/security/advisories/GHSA-85fq-fc5f-7j7g | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Arthur Chan (en)
CNA: David Korczynski (en)
CNA: Adam Korcz (en)
There are currently no legacy QID mappings associated with this CVE.