CVE-2026-55180

pnpm: Repository config can expand victim environment secrets into registry requests before scripts run

MEDIUM
6.5
CVSS Score
Published: June 25, 2026 at 05:00 PM UTC
Updated: July 1, 2026 at 11:22 PM UTC
1 product affected across 1 vendorPnpm

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

pnpm is a package manager. Prior to 10.34.2 and 11.5.3, pnpm and pacquet expanded ${ENV_VAR} placeholders from repository-controlled .npmrc and pnpm-workspace.yaml into registry request destinations and registry credentials. A malicious repository could cause dependency resolution to send victim environment secrets to an attacker-selected registry before lifecycle scripts run. This vulnerability is fixed in 10.34.2 and 11.5.3.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 10.34.2v < 11.5.311.0.0 ≤ v < 11.5.3
Affected range stops below 10.34.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 11.5.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/pnpm/pnpm/security/advisories/GHSA-3qhv-2rgh-x77r

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-200CWE-201CWE-522

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