CVE-2025-32379

6.1 mediumEPSS 0.3%

Medium (6.1) in koajs koa. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in koa 2.16.1, 3.0.0-alpha.5.

Koa is expressive middleware for Node.js using ES2017 async functions. In koa < 2.16.1 and < 3.0.0-alpha.5, passing untrusted user input to ctx.redirect() even after sanitizing it, may execute javascript code on the user who use the app. This issue is patched in 2.16.1 and 3.0.0-alpha.5.

Severity

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 18% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2025-04-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

koajs:koa

Packages (OSV)

Advisory	Ecosystem	Package	Affected	Fixed in
GHSA-x2rg-q646-7m2v	npm	koa	<2.16.1	2.16.1
GHSA-x2rg-q646-7m2v	npm	koa	>=3.0.0-alpha.1 <3.0.0-alpha.5	3.0.0-alpha.5

References

https://github.com/koajs/koa/commit/ff25eb4a7f2392df46481fe86355161067687312
https://github.com/koajs/koa/security/advisories/GHSA-x2rg-q646-7m2v

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