CVE-2026-27606 (Critical) detected in rollup-2.79.2.tgz - autoclosed

[mend-bolt-for-github]

CVE-2026-27606 - Critical Severity Vulnerability

Vulnerable Library - rollup-2.79.2.tgz

Next-generation ES module bundler

Library home page: https://registry.npmjs.org/rollup/-/rollup-2.79.2.tgz

Path to dependency file: /ui/package.json

Path to vulnerable library: /ui/package.json

Dependency Hierarchy:

• @postgres.ai/ce-4.0.3.tgz (Root Library)
  • react-scripts-5.0.1.tgz
    • workbox-webpack-plugin-6.5.4.tgz
      • workbox-build-6.5.4.tgz
        • ❌ rollup-2.79.2.tgz (Vulnerable Library)

Found in base branch: master

Vulnerability Details

Rollup is a module bundler for JavaScript. Versions prior to 2.80.0, 3.30.0, and 4.59.0 of the Rollup module bundler (specifically v4.x and present in current source) is vulnerable to an Arbitrary File Write via Path Traversal. Insecure file name sanitization in the core engine allows an attacker to control output filenames (e.g., via CLI named inputs, manual chunk aliases, or malicious plugins) and use traversal sequences ("../") to overwrite files anywhere on the host filesystem that the build process has permissions for. This can lead to persistent Remote Code Execution (RCE) by overwriting critical system or user configuration files. Versions 2.80.0, 3.30.0, and 4.59.0 contain a patch for the issue.

Publish Date: 2026-02-25

URL: CVE-2026-27606

CVSS 3 Score Details (9.1)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-mw96-cpmx-2vgc

Release Date: 2026-02-25

Fix Resolution: rollup - 4.59.0,rollup - 2.80.0,rollup - 3.30.0

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[mend-bolt-for-github]

✔️ This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.