Skip to main content

Inefficient Regular Expression Complexity

CVE-2024-45801

High
7.3/10

Summary

DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. It has been discovered that malicious HTML using special nesting techniques can bypass the depth checking added to DOMPurify in recent releases. It was also possible to use Prototype Pollution to weaken the depth check. This renders dompurify unable to avoid Cross-Site Scripting (XSS) attacks. All users are advised to upgrade. There are no known workarounds for this vulnerability. This issue affects dompurify versions through 2.5.2, and 3.0.0 through 3.1.2.

  • LOW
  • NETWORK
  • LOW
  • UNCHANGED
  • NONE
  • NONE
  • LOW
  • LOW

CWE-1333 - Inefficient Regular Expression Complexity

The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.

References

Advisory Timeline

  • Published