Vulnerability · Published Oct 23, 2026 · Assigned by WPScan

CVE-2026-109936Otter Blocks < 3.2.8 - Unauthenticated Stored XSS via Dynamic Content Render Filter

High 7.5

In plain English

A high-severity cross-site scripting in Otter Blocks from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.3%top 79.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The Otter Blocks WordPress plugin before 3.2.8 does not correctly bound a pattern it uses to rewrite its dynamic-content tokens while rendering blocks, so the pattern can consume the quote that closes an HTML attribute and pull adjacent unescaped data into the markup as new attributes. This allows unauthenticated users to achieve stored Cross-Site Scripting that executes in the browser of any visitor who views an affected page, including a logged-in administrator.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Otter Blocks	0 – before 3.2.8

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References

https://wpscan.com/vulnerability/c9f264ad-0857-4d1f-9f20-694469d7bee0/ exploit, vdb-entry, technical-description