CVE-2025-45526 (GCVE-0-2025-45526)

Vulnerability from cvelistv5 – Published: 2025-06-17 00:00 – Updated: 2025-06-26 16:10 Disputed
VLAI
Summary
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.
Severity
2.9 (Low)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-26 16:10 UTC
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
mitre CNA
References
Impacted products
Vendor Product Version
asvd microlight Affected: 0 , ≤ 0.0.7 (semver)
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