CVE-2023-43643
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.
Does this matter?
Lower severity and a low EPSS score (0.47%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.47% probability · 40th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- antisamy project/antisamy
- Source
- security-advisories@github.com
References
- https://github.com/nahsra/antisamy/releases/tag/v1.7.4Patch
- https://github.com/nahsra/antisamy/security/advisories/GHSA-pcf2-gh6g-h5r2Exploit, Mitigation, Product, Vendor Advisory
- https://github.com/nahsra/antisamy/releases/tag/v1.7.4Patch
- https://github.com/nahsra/antisamy/security/advisories/GHSA-pcf2-gh6g-h5r2Exploit, Mitigation, Product, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.