Description
Versions of the package deno before 1.31.0 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the upgradeWebSocket function, which contains regexes in the form of /s*,s*/, used for splitting the Connection/Upgrade header. A specially crafted Connection/Upgrade header can be used to significantly slow down a web socket server.

Published: 2023-02-25
Score: 5.3 Medium
EPSS: < 1% Very Low
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
Source ID Title
EUVD EUVD EUVD-2023-1335 Versions of the package deno before 1.31.0 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the upgradeWebSocket function, which contains regexes in the form of /s*,s*/, used for splitting the Connection/Upgrade header. A specially crafted Connection/Upgrade header can be used to significantly slow down a web socket server.
Github GHSA Github GHSA GHSA-jc97-h3h9-7xh6 Regular Expression Denial of Service in Deno.upgradeWebSocket API
History

Tue, 11 Mar 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Subscriptions

Deno Deno
cve-icon MITRE

Status: PUBLISHED

Assigner: snyk

Published:

Updated: 2025-03-11T15:31:01.247Z

Reserved: 2023-02-20T10:28:48.921Z

Link: CVE-2023-26103

cve-icon Vulnrichment

Updated: 2024-08-02T11:39:06.569Z

cve-icon NVD

Status : Modified

Published: 2023-02-25T05:15:12.343

Modified: 2025-03-11T16:15:14.263

Link: CVE-2023-26103

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses