Description
A client may issue HTTP/2 requests to a Jetty server that result in blocking writes that are never unblocked, eventually causing all threads to be blocked and the whole server to become unresponsive.




This is caused by a race condition in the server when handling RST_STREAM frames and GOAWAY frames sent by the client.




The race condition "resets" the HTTP2Flusher.terminated, previously set to a non-null value, to the null value, allowing entries to be enqueued in the flusher that however will never be processed. These unprocessed entries are the ones that would unblock the write-blocked threads.
Published: 2026-09-08
Score: 8.7 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Tue, 08 Sep 2026 13:45:00 +0000

Type Values Removed Values Added
First Time appeared Eclipse
Eclipse jetty
Vendors & Products Eclipse
Eclipse jetty

Tue, 08 Sep 2026 12:45:00 +0000

Type Values Removed Values Added
Description A client may issue HTTP/2 requests to a Jetty server that result in blocking writes that are never unblocked, eventually causing all threads to be blocked and the whole server to become unresponsive. This is caused by a race condition in the server when handling RST_STREAM frames and GOAWAY frames sent by the client. The race condition "resets" the HTTP2Flusher.terminated, previously set to a non-null value, to the null value, allowing entries to be enqueued in the flusher that however will never be processed. These unprocessed entries are the ones that would unblock the write-blocked threads.
Weaknesses CWE-400
References
Metrics cvssV4_0

{'score': 8.7, 'vector': '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'}

Subscriptions

Eclipse Jetty
cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published:

Updated: 2026-09-08T12:28:51.669Z

Reserved: 2026-06-18T11:34:22.081Z

Link: CVE-2026-12611

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-08T13:17:17.150

Modified: 2026-09-08T13:17:17.150

Link: CVE-2026-12611

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-08T13:30:18Z

Weaknesses
  • CWE-400

    Uncontrolled Resource Consumption