Answer in brief
CVE-2026-77711 records a High severity (CVSS 8.2) vulnerability in CISA ADP Vulnrichment. The current sources do not mark it as known exploited. The current feed maps 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.
CVSS is 8.2. 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.
The current feed maps Eclipse Foundation/Eclipse Jetty (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Eclipse Foundation/Eclipse Jettygeneric | >=12.1.0 <=12.1.12 || >=12.0.0 <=12.0.38 || >=11.0.0 <=11.0.32 || >=10.0.0 <=10.0.32 || >=9.4.0 <=9.4.64 | Not reported |
Published upstream
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
When Jetty's `HttpClient` make a request to a server through a forward proxy, the server may reply with a 407 (Proxy Authentication Required). The client mistakenly interprets the 407 as coming from the proxy, so it re-sends the request with the `Proxy-Authentication` header, which arrives to the server, that now has access to the proxy credentials.
Quoted source text, attributed separately from HOL analysis.