CVE-2026-87742
Quarkus-websockets-next: denial of service (oom) in quarkus-websockets-next via unbounded message buffering
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
A flaw was found in quarkus-websockets-next. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by streaming messages over a single connection faster than the application can process them. Due to unbounded message buffering and a lack of read backpressure, this rapidly exhausts heap space, leading to a java.lang.OutOfMemoryError that crashes the Java Virtual Machine (JVM).
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- quarkus-websockets-next
Version range not reported
- quarkus-websockets-next
Version range not reported
- exploit-intelligence/agent-client-rhel9
Version range not reported
- rhelai3/bootc-cuda-rhel9
Version range not reported
- rhelai3/bootc-gaudi-rhel9
Version range not reported
- rhelai3/bootc-rocm-rhel9
Version range not reported
- rhelai3/disk-image-cuda-rhel9
Version range not reported