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VulnerabilityPublished Updated

CVE-2024-1691: Otter Blocks PRO (WordPress plugin) · Cross-site Scripting

Affects Otter Blocks PRO (WordPress plugin)Source CVE Database V5

0

Not known to be exploited · CVSS 6.1 Medium · fixed in 2.6.4 : update Otter Blocks PRO (WordPress plugin) when convenient.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.6.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Mar 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Themisle Otter Blocks PRO – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSEAffected
  • =0
Fixed in–

AI-suggested

Upgrade the Otter Blocks PRO plugin to version 2.6.4 or later, where the vulnerability is fixed by sanitizing uploaded SVG files. Users should not rely on earlier versions as they are vulnerable. No additional mitigations are specified or required once the plugin is updated.

Description

The Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE PRO plugin for WordPress is vulnerable to Stored Cross-Site Scripting via file upload form, which allows SVG uploads, in all versions up to, and including, 2.6.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Note that the patch in 2.6.4 allows SVG uploads but the uploaded SVG files are sanitized.

References

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