CVE-2025-45525
lowpriority · track · 0EPSS 0.001 · 4 %ileEUUSEPSS · scored 2026-10-27
A NULL pointer dereference vulnerability has been identified in the JavaScript library microlight version 0.0.7, a lightweight syntax highlighting library. When processing elements with non-standard CSS color values, the library fails to validate the result of a regular expression match before accessing its properties, leading to an uncaught TypeError and potential application crash. NOTE: this is disputed by multiple parties because there is no common scenario in which an adversary can insert those non-standard values.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
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weaknesses
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affected products (3)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-64x7-m7rh-9m83Withdrawn Advisory: microlight.js has a null pointer dereference vulnerability2025-06-17ghsa · osvUS
## Withdrawn Advisory This advisory has been withdrawn because a website owner has to set CSS color values. The proof of concept doesn't demonstrate how a malicious user who is not the website owner can cause an application crash. This link has been maintained to preserve external references. ## Original Description A null pointer dereference vulnerability was discovered in microlight.js (version 0.0.7), a lightweight syntax highlighting library. When processing elements with non-standard CSS color values, the library fails to validate the result of a regular expression match before accessing its properties, leading to an uncaught TypeError and potential application crash.
also known as (3)
Other names and identifiers for this entity.
sources
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references (8)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2025-45525cnnvd
- https://gist.github.com/Rootingg/843368931f70886bed3cf982f10a4424cnnvd
- https://github.com/github/advisory-database/pull/5730cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2025-45525cnnvd
- https://gist.github.com/Rootingg/843368931f70886bed3cf982f10a4424enisa_euvd
- https://github.com/github/advisory-database/pull/5730enisa_euvd
- https://gist.github.com/Rootingg/843368931f70886bed3cf982f10a4424nvd
- https://github.com/github/advisory-database/pull/5730nvd
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