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

!IMPORTANT CVE-2026-76844 was assigned and published for this issue by VulnCheck on 2026-08-24 without prior coordination with the webpack maintainers or the OpenJS Foundation, which holds the CVE Numbering Authority scope for webpack projects. Neither the maintainers nor the OpenJS CNA were...

GHSA-G84C-RXFJ-3J2C webpack-dev-middleware vulnerable to Path Traversal via non-slash-terminated publicPath

!IMPORTANT CVE-2026-76844 was assigned and published for this issue by VulnCheck on 2026-08-24 without prior coordination with the webpack maintainers or the OpenJS Foundation, which holds the CVE Numbering Authority scope for webpack projects. Neither the maintainers nor the OpenJS CNA were...

Directory Traversal

Overview Affected versions of this package are vulnerable to Directory Traversal through getFilenameFromUrl in src/middleware.js. An attacker can read files outside the configured output directory by sending a request whose path shares a publicPath prefix without actually being under it, such as...

Directory Traversal

Overview Affected versions of this package are vulnerable to Directory Traversal through getFilenameFromUrl in src/middleware.js. An attacker can read files outside the configured output directory by sending a request whose path shares a publicPath prefix without actually being under it, such as...

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

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-g84c-rxfj-3j2c. This link is maintained to preserve external references. Original Description webpack-dev-middleware resolves a request to a local file in getFilenameFromUrl by testing the request pathname again...

GHSA-P3F5-W63M-MXPH Duplicate Advisory: webpack-dev-middleware vulnerable to Path Traversal via non-slash-terminated publicPath

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-g84c-rxfj-3j2c. This link is maintained to preserve external references. Original Description webpack-dev-middleware resolves a request to a local file in getFilenameFromUrl by testing the request pathname again...

CVE-2026-76844: Improper Limitation of a Pathname to a Restricted Directory

zlib 1.2.11 through 1.3.2 contains a heap buffer overflow: after an underlying write fails, gzwrite returns without resetting strm.nextin, leaving it pointed at the caller's buffer. A later gz write call then derives a position from the stale pointer and writes past a heap allocation; any write...

CVE-2024-29180

Prior to versions 7.1.0, 6.1.2, and 5.3.4, the webpack-dev-middleware development middleware for devpack does not validate the supplied URL address sufficiently before returning the local file. It is possible to access any file on the developer's machine. The middleware can either work with the...

CVE-2024-29180: Improper Limitation of a Pathname to a Restricted Directory

Prior to versions 7.1.0, 6.1.2, and 5.3.4, the webpack-dev-middleware development middleware for devpack does not validate the supplied URL address sufficiently before returning the local file. It is possible to access any file on the developer's machine. The middleware can either work with the...