Application crash via unchecked color regex result
Published Jun 17, 2025 · Updated Aug 26, 2025
NULL pointer dereference in Dmitry Prokashev microlight 0.0.7 and earlier allows attackers to crash the application via a non-standard CSS color value. In the reset function, a regular expression parses the computed color, but the code reads colorArr[1] and colorArr[3] without checking whether the match returned null. Reaching the crash requires control over a site's CSS or forced alteration of the regex result, and GitHub withdrew its advisory because the published proof of concept did not show an adversary-controlled path.
Summary
What happened
NULL pointer dereference in Dmitry Prokashev microlight 0.0.7 and earlier allows attackers to crash the application via a non-standard CSS color value. In the reset function, a regular expression parses the computed color, but the code reads colorArr[1] and colorArr[3] without checking whether the match returned null. Reaching the crash requires control over a site's CSS or forced alteration of the regex result, and GitHub withdrew its advisory because the published proof of concept did not show an adversary-controlled path.
The record
- CVE
- CVE-2025-45525
- Published
- Jun 17, 2025
- Updated
- Aug 26, 2025
- Vendor
- Dmitry Prokashev
- Product
- microlight
- Classifications
- CWE-476, T1499.004
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Jun 17, 2025CVE publishedPublication date reported by the CVE source.
- Aug 26, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=0.0.7
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Microlight.js Null Pointer Dereference PoCproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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