High · CVSS 8.7CVE-2026-19204

CISA ADP VulnrichmentCVE-2026-19204

Answer in brief

CVE-2026-19204 records a High severity (CVSS 8.7) vulnerability in CISA ADP Vulnrichment. The current sources do not mark it as known exploited. The current feed maps Eclipse Foundation/Eclipse Jetty (generic), Eclipse Foundation/Eclipse Jetty (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 7, 2026Updated Sep 8, 2026Source checked Oct 23, 2026First seen by HOL Sep 7, 2026Material review Sep 8, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.7
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Not reported

Why this deserves its current priority

CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Eclipse Foundation/Eclipse Jetty (generic), Eclipse Foundation/Eclipse Jetty (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Eclipse Foundation/Eclipse Jettygeneric	>=12.1.0 <=12.1.11 \|\| >=12.0.0 <=12.0.37 \|\| >=11.0.0 <=11.0.31 \|\| >=10.0.0 <=10.0.31	Not reported
Eclipse Foundation/Eclipse Jettygeneric	12.1.0 \|\| 12.0.0 \|\| 11.0.0 \|\| 10.0.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Eclipse Foundation/Eclipse Jetty, Eclipse Foundation/Eclipse Jetty.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 7, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 7, 2026

Sources and claim methodology

GitHub security advisorygithub.com

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.