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01 Record

CVE-2026-87742

Quarkus-websockets-next: denial of service (oom) in quarkus-websockets-next via unbounded message buffering

HighPUBLISHEDCNA: redhat
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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02 Description

Quarkus-websockets-next: denial of service (oom) in quarkus-websockets-next via unbounded message buffering

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.75% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 54.9% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-10-09.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-09-17 14:57Z1 MO AGO
Last updated
2026-10-09 15:37Z19 DAYS AGO
Reserved
2026-09-09
Assigning CNA
redhat
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-770Allocation of Resources Without Limits or ThrottlingBase
Data version
5.2
Document digest
38a010f88282391dc5e51c69aaaacf07a7845f70fdbc1d534bf167b751af4800

05 Affected products

VendorProductVersionsPlatforms
Red HatRed Hat build of Quarkus 3.27.5.SP2Not specified—
Red HatRed Hat build of Quarkus 3.33.3.SP2Not specified—
Red HatExploit IntelligenceNot specified—
Red HatRed Hat Enterprise Linux AI (RHEL AI) 3Not specified—

06 References