CVE-2026-73088 - High Severity Vulnerability
Vulnerable Library - browserslist-4.18.1.tgz
Share target browsers between different front-end tools, like Autoprefixer, Stylelint and babel-env-preset
Library home page: https://registry.npmjs.org/browserslist/-/browserslist-4.18.1.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/browserslist/package.json
Dependency Hierarchy:
- build-angular-13.0.3.tgz (Root Library)
- ❌ browserslist-4.18.1.tgz (Vulnerable Library)
Found in base branch: master
Vulnerability Details
Browserslist is a configuration tool for sharing target browsers and Node.js versions between front-end tools. Prior to 4.28.7, normalizeStats() in node.js, reached unconditionally through getStat() and loadStat() on every browserslist() call, processes untrusted browserslist-stats.json, opts.stats, and CLI --stats data with an unguarded for...in loop and plain-object bracket access and assignment, allowing inherited Object.prototype keys including proto, toString, valueOf, constructor, hasOwnProperty, and isPrototypeOf to cause an uncaught TypeError or modify the prototype of the returned normalized object. This issue is fixed in version 4.28.7.
Mend Note: The description of this vulnerability differs from MITRE.
Publish Date: 2026-08-11
URL: CVE-2026-73088
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-73wf-gq98-2v4g
Release Date: 2026-08-11
Fix Resolution: browserslist - 4.28.7,https://github.com/browserslist/browserslist.git - 4.28.7
Step up your Open Source Security Game with Mend here
CVE-2026-73088 - High Severity Vulnerability
Share target browsers between different front-end tools, like Autoprefixer, Stylelint and babel-env-preset
Library home page: https://registry.npmjs.org/browserslist/-/browserslist-4.18.1.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/browserslist/package.json
Dependency Hierarchy:
Found in base branch: master
Browserslist is a configuration tool for sharing target browsers and Node.js versions between front-end tools. Prior to 4.28.7, normalizeStats() in node.js, reached unconditionally through getStat() and loadStat() on every browserslist() call, processes untrusted browserslist-stats.json, opts.stats, and CLI --stats data with an unguarded for...in loop and plain-object bracket access and assignment, allowing inherited Object.prototype keys including proto, toString, valueOf, constructor, hasOwnProperty, and isPrototypeOf to cause an uncaught TypeError or modify the prototype of the returned normalized object. This issue is fixed in version 4.28.7.
Mend Note: The description of this vulnerability differs from MITRE.
Publish Date: 2026-08-11
URL: CVE-2026-73088
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: GHSA-73wf-gq98-2v4g
Release Date: 2026-08-11
Fix Resolution: browserslist - 4.28.7,https://github.com/browserslist/browserslist.git - 4.28.7
Step up your Open Source Security Game with Mend here