DEBIAN-CVE-2026-19204
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.
DEBIAN-CVE-2026-19204
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-19204
jetty12
Source reference: /affected/0/package/name
- Affected versions
- 12.0.17-3
Source reference:
/affected/0/versions12.0.17-3.1Source reference:
/affected/0/versions12.0.17-3.1~deb13u1Source reference:
/affected/0/versions12.0.32-1Source reference:
/affected/0/versions12.0.32-2Source reference:
/affected/0/versions12.0.33-1Source reference:
/affected/0/versions12.0.39-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
jetty12
Source reference: /affected/1/package/name
- Affected versions
- 12.0.17-3
Source reference:
/affected/1/versions12.0.17-3.1Source reference:
/affected/1/versions12.0.17-3.1~deb13u1Source reference:
/affected/1/versions12.0.32-1Source reference:
/affected/1/versions12.0.32-2Source reference:
/affected/1/versions12.0.33-1Source reference:
/affected/1/versions12.0.39-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "jetty12",
"purl": "pkg:deb/debian/jetty12?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"12.0.17-3",
"12.0.17-3.1",
"12.0.17-3.1~deb13u1",
"12.0.32-1",
"12.0.32-2",
"12.0.33-1",
"12.0.39-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-19204.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "jetty12",
"purl": "pkg:deb/debian/jetty12?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"12.0.17-3",
"12.0.17-3.1",
"12.0.17-3.1~deb13u1",
"12.0.32-1",
"12.0.32-2",
"12.0.33-1",
"12.0.39-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-19204.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56181 · Revision 1
- Added to Heist Feed
- Publisher date