CVE-2026-48995 pnpm: Tarball hash of GitHub git dependencies is not stored in lockfile
A compromised GitHub codeload server can serve malicious tarballs for git dependencies because pnpm does not verify their hashes against the lockfile.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-48995?
CVE-2026-48995 is a medium-severity vulnerability in pnpm, published on 25 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
pnpm is a package manager. Prior to 10.33.4 and 11.0.7, a malicious codeload.github.com server can serve whatever tarball it wants and pnpm will install it regardless of the lockfile. The lockfile does not store the hash of the dependencies from https://codeload.github.com. This means that if this server was compromised or a person's machine configuration was compromised, pnpm would download and install these dependencies. This vulnerability is fixed in 10.33.4 and 11.0.7.
Weakness: CWE-353
Which versions are affected by CVE-2026-48995?
4 open source packages ship an affected version, including pnpm. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
pnpm npm | All versions | 10.33.4 |
pnpm npm | All versions | 10.33.4 |
pnpm npm | From 11.0.0 | 11.0.7 |
pnpm npm | From 11.0.0 | 11.0.7 |
Products include Pnpm Pnpm.
How do I fix CVE-2026-48995?
Upgrade pnpm to a fixed version for your release line: 10.33.4 or 11.0.7.
Is CVE-2026-48995 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-48995 exists.
Other vulnerabilities in pnpm
- CVE-2026-50016 pnpm: Transitive dependency alias path traversal allows project path override via symlink replacement
- CVE-2026-55698 pnpm: Project env lockfile can short-circuit package-manager resolution and execute lockfile-selected pnpm bytes
- CVE-2025-69264 pnpm v10+ Bypass "Dependency lifecycle scripts execution disabled by default"
- CVE-2022-26183 Untrusted Search Path in PNPM
- CVE-2026-59195 pnpm: Path traversal in configDependencies env lockfile allows symlink creation outside node_modules/.pnpm-config
Sources
Also known as GHSA-hg3w-7f8c-63hp, MINI-r2r2-m3v2-84hm, ROOT-APP-NPM-CVE-2026-48995.