CVE-2026-109933
Otter Blocks < 3.2.8 - Contributor+ Stored XSS via Block Style Attributes
Unknown Otter Blocks
CVSS
6.8MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.15%Chance of exploitation activity in the next 30 days, higher than 4% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 3.2.8Otter BlocksCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
The Otter Blocks WordPress plugin before 3.2.8 does not properly sanitize and escape user-supplied block styling values before writing them into an inline stylesheet, allowing users with contributor-level access and above to inject arbitrary web scripts that execute when any visitor, including administrators, views the affected post.
Text from CVE List
Affected versions 1
- Otter Blocksaffected: all versions before 3.2.8CVE List