Page Builder Gutenberg Blocks <= 3.1.16 - Authenticated (Contributor+) Stored Cross-Site Scripting via External iCal Feed Data
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.4epss 0.4%
exploitation probability
0.4%top 65% of all CVEs
observed exploitation
nono source reports it
The Page Builder Gutenberg Blocks – CoBlocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via external iCal feed data in all versions up to, and including, 3.1.16 due to insufficient output escaping of event titles, descriptions, and locations fetched from external iCal feeds in the Events block rendering function. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Affected products
godaddy · Page Builder Gutenberg Blocks – CoBlocksReferences
https://plugins.trac.wordpress.org/browser/coblocks/tags/3.1.16/src/blocks/events/index.php#L218https://plugins.trac.wordpress.org/browser/coblocks/tags/3.1.16/src/blocks/events/index.php#L245https://plugins.trac.wordpress.org/browser/coblocks/tags/3.1.16/src/blocks/events/index.php#L246https://plugins.trac.wordpress.org/browser/coblocks/tags/3.1.16/src/blocks/events/index.php#L255https://plugins.trac.wordpress.org/browser/coblocks/tags/3.1.16/src/blocks/events/index.php#L91https://plugins.trac.wordpress.org/browser/coblocks/trunk/src/blocks/events/index.php#L218https://plugins.trac.wordpress.org/browser/coblocks/trunk/src/blocks/events/index.php#L245https://plugins.trac.wordpress.org/browser/coblocks/trunk/src/blocks/events/index.php#L246https://plugins.trac.wordpress.org/browser/coblocks/trunk/src/blocks/events/index.php#L255https://plugins.trac.wordpress.org/browser/coblocks/trunk/src/blocks/events/index.php#L91https://plugins.trac.wordpress.org/changeset/3475789/coblocks/trunk/src/blocks/events/index.phphttps://plugins.trac.wordpress.org/changeset?old_path=%2Fcoblocks/tags/3.1.16&new_path=%2Fcoblocks/tags/3.1.17