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CVE-2026-55699

pnpm is a package manager. Prior to 10.34.2 and 11.5.3, Manifest bin object keys such as "", ".", and ".." passed pnpm's bin-name guard. When a malicious package was installed globally, later global remove, update, or add-replacement flows could re-derive those names from the installed manifest and pass path.join(globalBinDir, binName) to removeBin. For "." this targets the global bin directory; for ".." this targets its parent. This vulnerability is fixed in 10.34.2 and 11.5.3.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f77c4edd8bd4cdf91543e17abe3331eba47a12ef5bf4e11e0b35a18b1fa7c055
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b3e0d3c5c2648d114bbe4adc9d73eec340595e0e2eff08e9193d036443ee2579 · sha256:0ce776dc5a6a50c4… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-73","description":"CWE-73: External Control of File Name or Path","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b3e0d3c5c2648d114bbe4adc9d73eec340595e0e2eff08e9193d036443ee2579 · sha256:0ce776dc5a6a50c4… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"pnpm","vendor":"pnpm","versions":[{"status":"affected","version":"< 10.34.2"},{"status":"affected","version":">= 11.0.0, < 11.5.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3e0d3c5c2648d114bbe4adc9d73eec340595e0e2eff08e9193d036443ee2579 · sha256:0ce776dc5a6a50c4… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b3e0d3c5c2648d114bbe4adc9d73eec340595e0e2eff08e9193d036443ee2579 · sha256:0ce776dc5a6a50c4… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b3e0d3c5c2648d114bbe4adc9d73eec340595e0e2eff08e9193d036443ee2579 · sha256:0ce776dc5a6a50c4… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-73","description":"CWE-73: External Control of File Name or Path","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b3e0d3c5c2648d114bbe4adc9d73eec340595e0e2eff08e9193d036443ee2579 · sha256:0ce776dc5a6a50c4… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/pnpm/pnpm/security/advisories/GHSA-4gxm-v5v7-fqc4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b3e0d3c5c2648d114bbe4adc9d73eec340595e0e2eff08e9193d036443ee2579 · sha256:0ce776dc5a6a50c4… · /containers/adp/0/references/0
{"name":"https://github.com/pnpm/pnpm/security/advisories/GHSA-4gxm-v5v7-fqc4","tags":["x_refsource_CONFIRM"],"url":"https://github.com/pnpm/pnpm/security/advisories/GHSA-4gxm-v5v7-fqc4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b3e0d3c5c2648d114bbe4adc9d73eec340595e0e2eff08e9193d036443ee2579 · sha256:0ce776dc5a6a50c4… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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