EUVD-2026-64850

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

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...

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

NPM: webpack-dev-middleware vulnerable to Path Traversal via non-slash-terminated publicPath vulnerability discovered by ? in WordPress Npm webpack-dev-middleware versions 7.4.5...

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...

webpack-dev-middleware: webpack-dev-middleware: Information Disclosure via Path Traversal

A flaw was found in webpack-dev-middleware. A remote attacker can exploit a path traversal vulnerability when the configured publicPath lacks a trailing slash. By sending a specially crafted request, the attacker can bypass a security guard, allowing the middleware to resolve files from one...

SUSE CVE-2026-76844

webpack-dev-middleware resolves a request to a local file in getFilenameFromUrl by testing the request pathname against a traversal guard and then slicing it at a fixed character offset. The guard, UPPATHREGEXP applied to path.normalize./$pathname, only matches ".." that stands as a whole path...

CVE-2026-76844

A flaw was found in webpack-dev-middleware. A remote attacker can exploit a path traversal vulnerability when the configured publicPath lacks a trailing slash. By sending a specially crafted request, the attacker can bypass a security guard, allowing the middleware to resolve files from one...

Linux Distros Unpatched Vulnerability : CVE-2026-76844

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - webpack-dev-middleware resolves a request to a local file in getFilenameFromUrl by testing the request pathname against a traversal guard and then slicing it at...

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...

CVE-2026-76844

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-2026-76844 zlib 1.2.11 through 1.3.2 Heap Buffer Overflow via Stale gzwrite Pointer After Failed Write

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-2026-76844

webpack-dev-middleware suffers from a path traversal vulnerability in its getFilenameFromUrl function, an incomplete fix for CVE-2024-29180 . When publicPath is configured without a trailing slash, a crafted request (e.g., GET /assets../.env against publicPath /assets) bypasses the UP_PATH_REGEXP...

CVE-2026-76844 zlib 1.2.11 through 1.3.2 Heap Buffer Overflow via Stale gzwrite Pointer After Failed Write

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-2026-76844 zlib 1.2.11 through 1.3.2 Heap Buffer Overflow via Stale gzwrite Pointer After Failed Write

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

webpack-dev-middleware resolves a request to a local file in getFilenameFromUrl by testing the request pathname against a traversal guard and then slicing it at a fixed character offset. The guard, UPPATHREGEXP applied to path.normalize./$pathname, only matches ".." that stands as a whole path...

PT-2026-80854

Name of the Vulnerable Software and Affected Versions webpack-dev-middleware versions 5.3.4 through 5.x webpack-dev-middleware versions 6.1.2 through 6.x webpack-dev-middleware versions 7.1.0 through 7.x Description The software fails to sufficiently validate URL addresses before returning local...