CVE-2024-45801
DOMPurify allows tampering by prototype pollution
Description
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. This issue has been addressed in versions 2.5.4 and 3.1.3 of DOMPurify. All users are advised to upgrade. There are no known workarounds for this vulnerability.
How to fix CVE-2024-45801
To remediate CVE-2024-45801, upgrade the affected package to a fixed version below.
- —upgrade to 2.4.1+dfsg+~2.4.0-2+deb12u1 or later
- —upgrade to 2.5.4 or later
Is CVE-2024-45801 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.4.1+dfsg+~2.4.0-2+deb12u1
- from 0, < 2.5.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.0 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L |