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CVE-2025-45526

2.9 · LOW

A denial of service (DoS) vulnerability has been identified in the JavaScript library microlight version 0.0.7.

Published Jun 17, 2025CWE-770EPSS 0.14%

Overview

CVE-2025-45526 is a low-severity vulnerability. It was published on June 17, 2025 and has a CVSS 3.1 base score of 2.9 (LOW).

This vulnerability has a CVSS 3.1 base score of 2.9, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

A denial of service (DoS) vulnerability has been identified in the JavaScript library microlight version 0.0.7. This library, used for syntax highlighting, does not limit the size of textual content it processes in HTML elements with the microlight class. When excessively large content (e.g., 100 million characters) is processed, the reset function in microlight.js consumes excessive memory and CPU resources, causing browser crashes or unresponsiveness. An attacker can exploit this vulnerability by tricking a user into visiting a malicious web page containing a microlight element with large content, resulting in a denial of service. NOTE: this is disputed by multiple parties because a large amount of memory and CPU resources is expected to be needed for content of that size.

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

GitHubgist.github.com/Rootingg/483b09b760d031b62b172f2153f3ed2aGitHubgithub.com/github/advisory-database/pull/5730GitHubgist.github.com/Rootingg/483b09b760d031b62b172f2153f3ed2a

How CyberStrike helps

Frequently asked questions

What is CVE-2025-45526?

CVE-2025-45526 is a low-severity vulnerability. It was published on June 17, 2025 and has a CVSS 3.1 base score of 2.9 (LOW).

How severe is CVE-2025-45526?

This vulnerability has a CVSS 3.1 base score of 2.9, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-45526?

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-2025-45526?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-45526 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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