CVE-2026-76844

npm/webpack-dev-middleware CVE-2026-76844: high 7.4

webpack-dev-middleware vulnerable to Path Traversal via non-slash-terminated publicPath

Action: Upgrade webpack-dev-middleware to 7.4.6 or later.

npm i webpack-dev-middleware@8.3.0

npm i webpack-dev-middleware@7.4.6

Affected

Fixed versions

Sources

• osv: GHSA-g84c-rxfj-3j2c
• https://github.com/webpack/webpack-dev-middleware/security/advisories/GHSA-g84c-rxfj-3j2c
• https://nvd.nist.gov/vuln/detail/CVE-2026-76844
• https://github.com/webpack/webpack-dev-middleware/pull/2404
• https://github.com/webpack/webpack-dev-middleware/commit/13344e78b26d88fe9b7c8381a3860e248a52359b
• https://github.com/webpack/webpack-dev-middleware/commit/cefccbac330c29052fc6dffe85fd292ea2ac782b
• https://github.com/advisories/GHSA-wr3j-pwj9-hqq6
• https://github.com/webpack/webpack-dev-middleware
• https://github.com/webpack/webpack-dev-middleware/blob/v8.1.1/src/middleware.js
• https://github.com/webpack/webpack-dev-middleware/releases/tag/v7.4.6
• https://github.com/webpack/webpack-dev-middleware/releases/tag/v8.3.0
• https://www.vulncheck.com/advisories/webpack-dev-middleware-path-traversal-via-offset-slice-on-a-non-slash-terminated-publicpath

CVE-2026-76844 · published 2026-09-29T16:59:18Z · modified 2026-10-03T03:56:01.635170780Z · JSON