XSS in Antisamy Project
CVE-2023-43643
AntiSamy is a library for performing fast, configurable cleansing of HTML coming from untrusted sources. Prior to version 1.7.4, 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 and also allow for certain tags at the same time. As a result, certain crafty inputs can result in elements in comment tags being interpreted as executable when using AntiSamy's sanitized output. This issue has been patched in AntiSamy 1.7.4 and later.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
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: 0.005 (38.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Antisamy Project
- Nahsra Antisamy — versions <= 1.7.3
Weakness classification (CWE)
References
- github.com/nahsra/antisamy/security/advisories/GHSA-pcf2-gh6g-h5r2 (Product, Exploit, Mitigation, Vendor Advisory)
- github.com/nahsra/antisamy/releases/tag/v1.7.4 (Patch)
Frequently asked questions
- What is CVE-2023-43643?
- CVE-2023-43643 is a medium-severity vulnerability in Antisamy Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-10-09.
- How severe is CVE-2023-43643?
- Medium severity. CVSS v3 base score is 6.1 out of 10.