Insecure Package Management in pnpm Affects Dependency Integrity
CVE-2026-48995

4.8MEDIUM

Key Information:

Vendor

Pnpm

Status
Pnpm
Vendor
CVE Published:
25 June 2026

What is CVE-2026-48995?

The pnpm package manager is susceptible to a security issue where it fails to verify the integrity of packages fetched from codeload.github.com. Prior to versions 10.33.4 and 11.0.7, pnpm could install any tarball without validating its contents against the lockfile, posing a significant risk if the server or user environment is compromised. This flaw enables attackers to serve malicious code disguised as legitimate packages, leading to potential unauthorized access or data breaches. Upgrading to the fixed versions is crucial for maintaining software security.

Affected Version(s)

pnpm < 10.33.4 < 10.33.4

pnpm >= 11.0.0, < 11.0.7 < 11.0.0, 11.0.7

References

https://github.com/pnpm/pnpm/security/advisories/GHSA-hg3...
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CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.