Description
This CVE ID has been rejected or withdrawn by its CVE Numbering Authority as a duplicate of CVE-2026-48779.
Published: 2026-07-15
Score: n/a
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority as a duplicate of CVE-2026-48779.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade websockets:ws to version 8.21.1 or later, which corrects the fragment guard logic and eliminates the ability to create unbounded fragments.
  • If an upgrade is not immediately possible, configure the library to set maxFragments to a low number (e.g., 1) or disable fragmentation entirely, thereby preventing accumulation of uncompleted fragments.
  • Implement application‑level throttling or rate limiting on incoming WebSocket connections and fragment streams to constrain the rate of message processing, reducing the impact of any attempted memory exhaustion attack.
  • Deploy monitoring of Node.js heap usage and set alerts for anomalous memory growth, ensuring rapid detection if an attacker is successfully exhausting resources.

Generated by OpenCVE AI on July 31, 2026 at 03:14 UTC.

Tracking

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Advisories

No advisories yet.

References

No reference.

History

Wed, 29 Jul 2026 18:30:00 +0000

Type Values Removed Values Added
Title ws < 8.21.1 Default maxFragments Allows Memory Exhaustion DoS
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 29 Jul 2026 17:45:00 +0000

Type Values Removed Values Added
Description ws before 8.21.1 contains a memory exhaustion vulnerability in lib/receiver.js where the fragment guard only triggers when fragment count reaches maxFragments, allowing attackers to exhaust memory by sending incomplete fragmented WebSocket messages. Attackers can send a text frame with FIN=0 followed by continuation frames without completing the sequence, causing each fragment to be stored as a separate Buffer object with significant overhead, enabling denial of service through heap exhaustion. This CVE ID has been rejected or withdrawn by its CVE Numbering Authority as a duplicate of CVE-2026-48779.
Weaknesses CWE-770
CPEs cpe:2.3:a:websockets_project:websockets:*:*:*:*:*:python:*:*
Vendors & Products Websockets Project
Websockets Project websockets
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

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'}

Tue, 28 Jul 2026 02:30:00 +0000

Type Values Removed Values Added
First Time appeared Websockets Project
Websockets Project websockets
CPEs cpe:2.3:a:websockets_project:websockets:*:*:*:*:*:python:*:*
Vendors & Products Websockets Project
Websockets Project websockets

Thu, 16 Jul 2026 00:00:00 +0000

Type Values Removed Values Added
First Time appeared Websockets
Websockets ws
Vendors & Products Websockets
Websockets ws

Wed, 15 Jul 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 15 Jul 2026 17:30:00 +0000

Type Values Removed Values Added
Description ws before 8.21.1 contains a memory exhaustion vulnerability in lib/receiver.js where the fragment guard only triggers when fragment count reaches maxFragments, allowing attackers to exhaust memory by sending incomplete fragmented WebSocket messages. Attackers can send a text frame with FIN=0 followed by continuation frames without completing the sequence, causing each fragment to be stored as a separate Buffer object with significant overhead, enabling denial of service through heap exhaustion.
Title ws < 8.21.1 Default maxFragments Allows Memory Exhaustion DoS
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

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

Websockets Ws
cve-icon MITRE

Status: REJECTED

Assigner: VulnCheck

Published:

Updated: 2026-07-29T17:23:48.982Z

Reserved: 2026-07-13T22:40:54.412Z

Link: CVE-2026-62389

cve-icon Vulnrichment

Updated:

cve-icon NVD

Status : Rejected

Published: 2026-07-15T18:16:49.893

Modified: 2026-07-29T18:16:57.713

Link: CVE-2026-62389

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-31T03:15:04Z

Weaknesses

No weakness.