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CVE-2025-25290— @octokit/request has a Regular Expression in fetchWrapper that Leads to ReDoS Vulnerability Due to Catastrophic Backtracking

Quick assessment

Affected
octokit request.js
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Octokit是GitHub API 的 Ruby 工具包。 Octokit 1.0.0版本至9.2.1之前版本存在安全漏洞，该漏洞源于正则表达式匹配行为的无限制性质，可能导致在处理特制输入时发生灾难性的回溯，容易受到正则表达式拒绝服务(ReDoS)攻击。

CVSS 5.3 · Medium EPSS 0.78% · P56

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-25290

Vulnerability Information
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Vulnerability Title
@octokit/request has a Regular Expression in fetchWrapper that Leads to ReDoS Vulnerability Due to Catastrophic Backtracking
Source: CVE Program / CVE List V5
Vulnerability Description
@octokit/request sends parameterized requests to GitHub’s APIs with sensible defaults in browsers and Node. Starting in version 1.0.0 and prior to versions 9.2.1 and 8.4.1, the regular expression `/<([^>]+)>; rel="deprecation"/` used to match the `link` header in HTTP responses is vulnerable to a ReDoS (Regular Expression Denial of Service) attack. This vulnerability arises due to the unbounded nature of the regex's matching behavior, which can lead to catastrophic backtracking when processing specially crafted input. An attacker could exploit this flaw by sending a malicious `link` header, resulting in excessive CPU usage and potentially causing the server to become unresponsive, impacting service availability. Versions 9.2.1 and 8.4.1 fix the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Vulnerability Title
Octokit 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Octokit是GitHub API 的 Ruby 工具包。 Octokit 1.0.0版本至9.2.1之前版本存在安全漏洞，该漏洞源于正则表达式匹配行为的无限制性质，可能导致在处理特制输入时发生灾难性的回溯，容易受到正则表达式拒绝服务(ReDoS)攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
octokit request.js >= 1.0.0, < 9.2.1 -

II. Public POCs for CVE-2025-25290

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III. Intelligence Information for CVE-2025-25290

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Patches & Fixes for CVE-2025-25290 (1)

Vendor Advisories for CVE-2025-25290 (1)

Same Patch Batch · octokit · 2025-02-14 · 4 CVEs total

CVE-2025-25285 5.3 MEDIUM @octokit/endpoint has a Regular Expression in parse that Leads to ReDoS Vulnerability Due
CVE-2025-25288 5.3 MEDIUM @octokit/plugin-paginate-rest has a Regular Expression in iterator that Leads to ReDoS Vul
CVE-2025-25289 5.3 MEDIUM @octokit/request-error has a Regular Expression in index that Leads to ReDoS Vulnerability

IV. Related Vulnerabilities

Same vendor: octokit
Same weakness: CWE-1333

V. Comments for CVE-2025-25290

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