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  4. CVE 2026 109933 otter blocks 328 contributor stored xss via block
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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-109933

Otter Blocks < 3.2.8 - Contributor+ Stored XSS via Block Style AttributesCVE-2026-109933

Answer in brief

CVE-2026-109933 records a Unknown severity vulnerability in Otter Blocks < 3.2.8 - Contributor+ Stored XSS via Block Style Attributes. The current sources do not mark it as known exploited. The current feed maps Unknown/Otter Blocks (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 23, 2026Updated Oct 23, 2026Source checked Oct 23, 2026First seen by HOL Oct 23, 2026Material review Oct 23, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/Otter Blocks (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Unknown/Otter Blocksgeneric>=0 <3.2.83.2.8

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Unknown/Otter Blocks.
  2. 2Review the reported fix. Update Unknown/Otter Blocks to 3.2.8 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 23, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 23, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 23, 2026

Sources and claim methodology

  • Source referencewpscan.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Otter Blocks 3.1.1 - 3.2.7 - Unauthenticated Non-Public Content Disclosure via REST APISame unknown/otter blocks package
  • Otter Blocks < 3.2.8 - Unauthenticated Restricted Block Content Disclosure via REST APISame unknown/otter blocks package
  • Otter Blocks < 3.2.8 - Unauthenticated Stored XSS via Dynamic Content Render FilterSame unknown/otter blocks package
  • Anti-Spam by CleanTalk <= 6.89.1 - Unauthenticated Stored Cross-Site Scripting via 'user_email' Registration ParameterAlso CWE-79
  • Speed Optimizer < 7.8.5 - Admin+ Stored XSS via DNS Prefetch and Font Preload URL ListsAlso CWE-79
  • Profile Builder < 4.0.5 - Contributor+ Stored XSS via redirect_url Shortcode AttributeAlso CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 23, 2026
References
1 linked source
Open source record