CVE-2023-26103 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00092.

Exploitation poc

Automatable yes

Technical Impact partial

Vendors	Products
Deno	Deno

Configuration 1 [-]

cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*

No data.

No data.

Advisories

Source	ID	Title
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	GHSA-jc97-h3h9-7xh6	Regular Expression Denial of Service in Deno.upgradeWebSocket API

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://github.com/denoland/deno/blob/2b247be517d789a37e532849e2e40b724af0918f/ext/http/01_http.js%23L395-L409
https://github.com/denoland/deno/commit/cf06a7c7e672880e1b38598fe445e2c50b4a9d06
https://github.com/denoland/deno/pull/17722
https://github.com/denoland/deno/releases/tag/v1.31.0
https://security.snyk.io/vuln/SNYK-RUST-DENO-3315970

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'}`

MITRE

Status: PUBLISHED

Assigner: snyk

Published: 2023-02-25T05:00:01.387Z

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

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

Link: CVE-2023-26103

Vulnrichment

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

NVD

Status : Modified

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

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

Link: CVE-2023-26103

Redhat

No data.

OpenCVE Enrichment

No data.

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