CVE-2022-36033 Information

Description

jsoup is a Java HTML parser built for HTML editing cleaning scraping and cross-site scripting (XSS) safety. jsoup may incorrectly sanitize HTML including javascript: URL expressions which could allow XSS attacks when a reader subsequently clicks that link. If the non-default SafeList.preserveRelativeLinks option is enabled HTML including javascript: URLs that have been crafted with control characters will not be sanitized. If the site that this HTML is published on does not set a Content Security Policy an XSS attack is then possible. This issue is patched in jsoup 1.15.3. Users should upgrade to this version. Additionally as the unsanitized input may have been persisted old content should be cleaned again using the updated version. To remediate this issue without immediately upgrading: - disable SafeList.preserveRelativeLinks which will rewrite input URLs as absolute URLs - ensure an appropriate Content Security Policy is defined. (This should be used regardless of upgrading as a defence-in-depth best practice.)

Reference

https://github.com/jhy/jsoup/security/advisories/GHSA-gp7f-rwcx-9369 https://github.com/jhy/jsoup/releases/tag/jsoup-1.15.3 https://jsoup.org/news/release-1.15.3