CVE-2026-12611: CWE-400 Uncontrolled Resource Consumption in Eclipse Foundation Eclipse Jetty
CVE-2026-12611 is a high-severity vulnerability in Eclipse Jetty affecting specific versions. It involves a race condition in HTTP/2 request handling that can cause server threads to become indefinitely blocked, leading to server unresponsiveness. The issue arises when the server processes RST_STREAM and GOAWAY frames, resetting an internal flusher state and causing write-blocked threads to never be unblocked.
AI Analysis
Technical Summary
This vulnerability in Eclipse Jetty is due to a race condition triggered by client-sent HTTP/2 RST_STREAM and GOAWAY frames. The race condition resets the HTTP2Flusher.terminated state from a non-null to a null value, allowing entries to be enqueued in the flusher that are never processed. As a result, threads blocked on writes remain blocked indefinitely, causing the entire server to become unresponsive due to uncontrolled resource consumption.
Potential Impact
An attacker can cause a denial of service by sending crafted HTTP/2 requests that exploit the race condition, leading to all server threads being blocked and the server becoming unresponsive. This impacts availability but does not indicate compromise of confidentiality or integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Monitor the Eclipse Foundation's advisories for updates and apply patches once available.
CVE-2026-12611: CWE-400 Uncontrolled Resource Consumption in Eclipse Foundation Eclipse Jetty
Description
CVE-2026-12611 is a high-severity vulnerability in Eclipse Jetty affecting specific versions. It involves a race condition in HTTP/2 request handling that can cause server threads to become indefinitely blocked, leading to server unresponsiveness. The issue arises when the server processes RST_STREAM and GOAWAY frames, resetting an internal flusher state and causing write-blocked threads to never be unblocked.
CVSS v4.0
Score 8.7high
Affected software
pkg:maven/org.eclipse.jetty/jetty-serverRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Eclipse Jetty is due to a race condition triggered by client-sent HTTP/2 RST_STREAM and GOAWAY frames. The race condition resets the HTTP2Flusher.terminated state from a non-null to a null value, allowing entries to be enqueued in the flusher that are never processed. As a result, threads blocked on writes remain blocked indefinitely, causing the entire server to become unresponsive due to uncontrolled resource consumption.
Potential Impact
An attacker can cause a denial of service by sending crafted HTTP/2 requests that exploit the race condition, leading to all server threads being blocked and the server becoming unresponsive. This impacts availability but does not indicate compromise of confidentiality or integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Monitor the Eclipse Foundation's advisories for updates and apply patches once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- eclipse
- Date Reserved
- 2026-06-18T11:34:22.081Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6aa00520acd9273b49ab156a
Added to database: 09/08/2026, 12:52:48 UTC
Last enriched: 09/08/2026, 13:37:16 UTC
Last updated: 09/08/2026, 15:21:16 UTC
Views: 7
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