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CVE-2025-32379

18
FAUCET Score

CVE-2025-32379 is a medium-severity cross-site scripting (XSS) vulnerability affecting Koa, an expressive middleware for Node.js, specifically versions prior to 2.16.1 and 3.0.0-alpha.5. Untrusted user input passed to ctx.redirect() can execute JavaScript code on the user's browser, even after sanitization. The attack vector is network-based with low complexity, requiring user interaction, and could lead to limited confidentiality and integrity impacts. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.16.1CPE matchmatch criteria
cpe:2.3:a:koajs:koa:*:*:*:*:*:node.js:*:*
3.0.0CPE matchmatch criteria
cpe:2.3:a:koajs:koa:3.0.0:alpha0:*:*:*:node.js:*:*
3.0.0CPE matchmatch criteria
cpe:2.3:a:koajs:koa:3.0.0:alpha1:*:*:*:node.js:*:*
3.0.0CPE matchmatch criteria
cpe:2.3:a:koajs:koa:3.0.0:alpha2:*:*:*:node.js:*:*
3.0.0CPE matchmatch criteria
cpe:2.3:a:koajs:koa:3.0.0:alpha3:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

5.0MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
1.6
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
15.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 16th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: koaFixed in: 2.16.1
npmpatch availablevia ghsa
Product: koaFixed in: 3.0.0-alpha.5
redhatvendor investigatingvia redhat_api
Product: Red Hat Developer HubFixed in: rhdh/rhdh-hub-rhel9

Vendor Advisories (2)

redhatCVE-2025-32379Moderate

koa: XSS at ctx.redirect() function in Koajs

Apr 9, 2025
npmGHSA-x2rg-q646-7m2vmedium

Koajs vulnerable to Cross-Site Scripting (XSS) at ctx.redirect() function

Apr 9, 2025

References

github.com / koajs/koa/commit/ff25eb4a7f2392df46481fe86355161067687312
Patch
github.com / koajs/koa/security/advisories/GHSA-x2rg-q646-7m2v
PatchVendor Advisory