CVE-2026-55698

Published Jun 25, 2026

Last updated a month ago

CVSS high 8.8

Overview

Description: pnpm is a package manager. Prior to 10.34.2 and 11.5.3, pnpm can persist package-manager bootstrap metadata in the first YAML document of pnpm-lock.yaml. Before the patch, direct pnpm execution trusted an already resolved packageManagerDependencies entry when the committed env lockfile contained matching pnpm and @pnpm/exe versions. A malicious repository could therefore commit package-manager lockfile package records and snapshots that bypassed fresh package-manager resolution, then cause pnpm to install and execute bytes selected by that committed lockfile state during automatic version switching. This vulnerability is fixed in 10.34.2 and 11.5.3.
Source: security-advisories@github.com
NVD status: Analyzed
Products: pnpm

Risk scores

CVSS 3.1

Type: Secondary
Base score: 8.8
Impact score: 5.9
Exploitability score: 2.8
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity: HIGH

Weaknesses

security-advisories@github.com: CWE-345

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:node.js:*:*",
            "matchCriteriaId": "78477B45-9B80-4320-A5F4-2AF8D030DA04",
            "versionEndExcluding": "10.34.2",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:node.js:*:*",
            "matchCriteriaId": "F72C2733-EDFC-4CBF-8B11-7C636ABEBC1A",
            "versionEndExcluding": "11.5.3",
            "versionStartIncluding": "11.0.0",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.

Overview

Risk scores

CVSS 3.1

Weaknesses

Social media

Configurations

Related CVEs

References