CVE-2022-36033

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.)