CVE-2025-55152

MEDIUM

oak < 17.1.6 - Denial of Service via Inefficient Regular Expression in Header Parsing

Title source: llm
STIX 2.1

Description

oak is a middleware framework for Deno's native HTTP server, Deno Deploy, Node.js 16.5 and later, Cloudflare Workers and Bun. In versions 17.1.5 and below, it's possible to significantly slow down an oak server with specially crafted values of the x-forwarded-proto or x-forwarded-for headers.

References (2)

Core 2

Scores

CVSS v3 5.3
EPSS 0.0036
EPSS Percentile 27.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-1333 CWE-400
Status published
Products (2)
oakserver/oak 0npm
oakserver/oak < 17.1.6
Published Aug 09, 2025
Tracked Since Feb 18, 2026