Medium severity · published Oct 23, 2026
CVE-2026-109933
Otter Blocks < 3.2.8 - Contributor+ Stored XSS via Block Style Attributes
New
6.8
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OB
Otter Blocks ·
before 3.2.8 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-109933
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-109933
wpscan.com
https://wpscan.com/vulnerability/a2a19770-9ee2-4164-9ea6-a882cf0085e9/
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