CVE-2026-109933: medium-severity vulnerability in Otter Blocks
Otter Blocks < 3.2.8 - Contributor+ Stored XSS via Block Style Attributes
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 6.8epss 0.3%
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:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Affected products
Unknown · Otter Blockspublic PoCs found — 1
cve_referencewpscan.com/vulnerability/a2a19770-9ee2-4164-9ea6-a882cf0085e9/unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Otter Blocks
In the same product, most dangerous first.
CVE-2024-2729MEDIUMOtter Blocks < 2.6.6 - Contributor+ Stored XSSEPSS 0.4%CVE-2026-109936HIGHOtter Blocks < 3.2.8 - Unauthenticated Stored XSS via Dynamic Content Render FilterEPSS 0.3%CVE-2026-109935MEDIUMOtter Blocks < 3.2.8 - Unauthenticated Restricted Block Content Disclosure via REST APIEPSS 0.3%CVE-2026-109934MEDIUMOtter Blocks 3.1.1 - 3.2.7 - Unauthenticated Non-Public Content Disclosure via REST APIEPSS 0.3%CVE-2026-109937MEDIUMOtter Blocks < 3.2.3 - Unauthenticated Open Redirect via Stripe Checkout BlockEPSS 0.1%