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

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS No score.

Timeline

1. 31 Oct 2026, 13:34 UTC First seen by agentprime
2. 31 Oct 2026, 13:34 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-p3f5-w63m-mxph
• OSV: GHSA-p3f5-w63m-mxph
• nvd.nist.gov/vuln/detail/CVE-2026-76844
• github.com/advisories/GHSA-wr3j-pwj9-hqq6
• github.com/webpack/webpack-dev-middleware
• github.com/webpack/webpack-dev-middleware/blob/v8.1.1/src/middleware.js
• www.vulncheck.com/advisories/webpack-dev-middleware-path-traversal-via-offset-slice-on-a-non-slash-terminated-publicpath

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.