How severe is CVE-2024-45801?

CVE-2024-45801 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2024-45801 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-45801?

CVE-2024-45801 affects Cure53 Dompurify. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-45801?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-45801 have an EU (EUVD) identifier?

Yes. CVE-2024-45801 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-2835.

When was CVE-2024-45801 published?

CVE-2024-45801 was published on 2024-09-16 and last updated on 2026-06-17.

CVE-2024-45801

CVE-2024-45801 is a high-severity vulnerability in Cure53 Dompurify with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1321.

Key facts

Severity: High (CVSS 3.x base score 7.3)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-2835
Weakness: CWE-1321
Affected product: Cure53 Dompurify
Published: 2024-09-16
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2024-45801?: 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 severe is CVE-2024-45801?: CVE-2024-45801 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2024-45801 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-45801?: CVE-2024-45801 affects Cure53 Dompurify. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-45801?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-45801 have an EU (EUVD) identifier?: Yes. CVE-2024-45801 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-2835.
When was CVE-2024-45801 published?: CVE-2024-45801 was published on 2024-09-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cure53:dompurify:*:*:*:*:*:*:*:*

More vulnerabilities in Cure53 Dompurify

CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-48910 — Critical (CVSS 9.1): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMPurify was vulnerable to…
CVE-2026-41240 — Medium (CVSS 6.1): DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Versions prior to 3.4.0 have an…
CVE-2026-0540 — Medium (CVSS 6.1): DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in commit 2726c74, contain a cross-site scripting…
CVE-2025-15599 — Medium (CVSS 6.1): DOMPurify 3.1.3 through 3.2.6 and 2.5.3 through 2.5.8 contain a cross-site scripting vulnerability that allows…
CVE-2019-25155 — Medium (CVSS 6.1): DOMPurify before 1.0.11 allows reverse tabnabbing in demos/hooks-target-blank-demo.html because links lack a…

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