CVE-2026-59195
Description
A flaw was found in pnpm, a package manager. A remote attacker could exploit a path traversal vulnerability by crafting a malicious pnpm-lock.yaml file. When a user installs dependencies from such a repository, pnpm incorrectly processes package names from the configDependencies section, leading to the creation of symbolic links outside the intended directory. This allows an attacker to achieve arbitrary file writes within the victim's project directory, potentially extending to other areas of the filesystem.
Statement
This is an Important path traversal vulnerability in pnpm, a package manager used by Red Hat products such as Red Hat Build of Keycloak, Enterprise Application Platform, Red Hat AMQ, and Konflux. A malicious repository containing a specially crafted pnpm-lock.yaml file can lead to the creation of arbitrary symlinks outside the intended node_modules/.pnpm-config directory during pnpm install. This provides an attacker with a filesystem write primitive, even when --ignore-scripts is used, increasing the risk of unauthorized file manipulation.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 8.2 | N/A | 8.2 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | Required | N/A | Required |
| Scope | Changed | N/A | Changed |
| Confidentiality | None | N/A | None |
| Integrity Impact | High | N/A | High |
| Availability Impact | Low | N/A | Low |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:L
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:L
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