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CVE-2026-73088

7.5 · HIGH

Browserslist is a configuration tool for sharing target browsers and Node.js versions between front-end tools.

Published Aug 11, 2026CWE-248EPSS 0.66%

Overview

CVE-2026-73088 is a high-severity vulnerability. It was published on August 11, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/browserslist/browserslist/commit/f9914ad9effc865ccc27d816255625890b31ca51GitHubgithub.com/browserslist/browserslist/releases/tag/4.28.7GitHubgithub.com/browserslist/browserslist/security/advisories/GHSA-73wf-gq98-2v4gGitHubgithub.com/browserslist/browserslist/security/advisories/GHSA-73wf-gq98-2v4g

How CyberStrike helps

Frequently asked questions

What is CVE-2026-73088?

CVE-2026-73088 is a high-severity vulnerability. It was published on August 11, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-73088?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-73088?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-73088?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-73088 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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