CVEvulnerability
CVE-2023-26103
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2023-02-25
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-1333
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.
Affected configurations
• deno deno (< 1.31.0)
Related
Weakness · CWE (1)
- CWE-1333 Inefficient Regular Expression Complexity weakness
References
- https://github.com/denoland/deno/blob/2b247be517d789a37e532849e2e40b724af0918f/ext/http/01_http.js%23L395-L409 Broken Link
- https://github.com/denoland/deno/commit/cf06a7c7e672880e1b38598fe445e2c50b4a9d06 Patch
- https://github.com/denoland/deno/pull/17722 Patch
- https://github.com/denoland/deno/releases/tag/v1.31.0 Release Notes
- https://security.snyk.io/vuln/SNYK-RUST-DENO-3315970 Exploit, Technical Description, Third Party Advisory
- https://github.com/denoland/deno/blob/2b247be517d789a37e532849e2e40b724af0918f/ext/http/01_http.js%23L395-L409 Broken Link
- https://github.com/denoland/deno/commit/cf06a7c7e672880e1b38598fe445e2c50b4a9d06 Patch
- https://github.com/denoland/deno/pull/17722 Patch
- https://github.com/denoland/deno/releases/tag/v1.31.0 Release Notes
- https://security.snyk.io/vuln/SNYK-RUST-DENO-3315970 Exploit, Technical Description, Third Party Advisory