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
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.3 | High | 4.0 | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N | CNA (VulnCheck) |
- CISA KEV Not listed.
- EPSS 0.0059, the 48th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 13:34 UTC First seen by agentprime
- 31 Oct 2026, 13:34 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-g84c-rxfj-3j2c
- OSV: GHSA-g84c-rxfj-3j2c
- github.com/webpack/webpack-dev-middleware/security/advisories/GHSA-g84c-rxfj-3j2c
- nvd.nist.gov/vuln/detail/CVE-2026-76844
- github.com/webpack/webpack-dev-middleware/pull/2404
- github.com/webpack/webpack-dev-middleware/commit/13344e78b26d88fe9b7c8381a3860e248a52359b
- github.com/webpack/webpack-dev-middleware/commit/cefccbac330c29052fc6dffe85fd292ea2ac782b
- 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
- github.com/webpack/webpack-dev-middleware/releases/tag/v7.4.6
- github.com/webpack/webpack-dev-middleware/releases/tag/v8.3.0
- www.vulncheck.com/advisories/webpack-dev-middleware-path-traversal-via-offset-slice-on-a-non-slash-terminated-publicpath