StackPrism

npm package

webpack 5.99.5 vulnerabilities, and the version that fixes all of them

webpack 5.99.5 has 2 known vulnerabilities; 5.104.1 fixes all of them.

npm (opens in a new tab) describes it as “Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports loaders to preprocess files, i.e. json, jsx, es…”

Known vulnerabilities
2
None rated high or critical
Released
Apr 8, 2025
Latest is 5.112.0
Downloads last week
92.1K
Under 1% of webpack downloads
Licence
MIT
OpenSSF Scorecard
5.6/10
webpack/webpack (opens in a new tab)
Pulls in
73 packages
Resolved by deps.dev

What to upgrade to

5.104.1 is the closest release with no known vulnerabilities.

  • 5.104.1Upgrade to this

    Fixes all 2 known vulnerabilities. Released Dec 18, 2025.

    No known vulnerabilities

  • 5.112.0

    Newest 5.x release and the latest release. Released Oct 15, 2026.

    No known vulnerabilities

5.104.1 came out on Dec 18, 2025. A coding agent trained before then doesn’t know it exists, so it may suggest an older release. AI knowledge cutoff dates

Findings

Every advisory for webpack 5.99.5

Known exploited first (CISA KEV), then by how likely they are to be exploited (FIRST EPSS), then by severity. Each id links to its OSV.dev record.

  1. LowCVE-2025-68458 on OSV.dev (opens in a new tab)GHSA-8fgc-7cc6-rx7xEPSS: top 87%

    webpack buildHttp: allowedUris allow-list bypass via URL userinfo (@) leading to build-time SSRF behavior

    Fixed in 5.104.1. Published Feb 5, 2026.

  2. LowCVE-2025-68157 on OSV.dev (opens in a new tab)GHSA-38r7-794h-5758EPSS: top 87%

    webpack buildHttp HttpUriPlugin allowedUris bypass via HTTP redirects → SSRF + cache persistence

    Fixed in 5.104.0. Published Feb 5, 2026.

Who is still on a vulnerable webpack

25% of last week’s 56.2M webpack downloads went to versions with known vulnerabilities.

From npm’s per-version download counts for the last 7 days, each version checked against OSV.dev. The versions checked cover over 99% of downloads.

Is webpack the only one?

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How this page is checked

StackPrism asks OSV.dev which advisories affect exactly webpack 5.99.5, merges duplicates filed under several ids, and ranks them with CISA’s Known Exploited Vulnerabilities list and FIRST EPSS. Release dates and deprecation come from deps.dev and npm. No AI writes this page: every sentence comes from that data, refreshed every few hours.

Last checked against npm, OSV.dev, deps.dev, CISA KEV and FIRST EPSS.