What is CVE-2024-23635?

CVE-2024-23635 is a medium-severity vulnerability in Antisamy Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-02-02.

How severe is CVE-2024-23635?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Antisamy Project

CVE-2024-23635

AntiSamy is a library for performing fast, configurable cleansing of HTML coming from untrusted sources. Prior to 1.7.5, there is a potential for a mutation XSS (mXSS) vulnerability in AntiSamy caused by flawed parsing of the HTML being sanitized. To be subject to this vulnerability the `preserveComments` directive must be enabled in your policy file. As a result, certain crafty inputs can result in elements in comment tags being interpreted as executable when using AntiSamy's sanitized output. Patched in AntiSamy 1.7.5 and later.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-02-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (28.3th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Antisamy Project
Nahsra Antisamy — versions < 1.7.5

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/nahsra/antisamy/security/advisories/GHSA-2mrq-w8pv-5pvq (Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2024-23635?: CVE-2024-23635 is a medium-severity vulnerability in Antisamy Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-02-02.
How severe is CVE-2024-23635?: Medium severity. CVSS v3 base score is 6.1 out of 10.