CVE-2026-109234 (GCVE-0-2026-109234)

Vulnerability from cvelistv5 – Published: 2026-10-31 05:33 – Updated: 2026-11-01 17:44
VLAI
Title
Meow Lightbox <= 5.6.4 - Unauthenticated Stored Cross-Site Scripting via HTML Parser Quote-Metadata Desynchronization
Summary
The Meow Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'post_content (bbPress reply body)' parameter in all versions up to, and including, 5.6.4 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. This requires the administrator to have enabled Output Buffering, the HtmlDomParser engine, and Aggressive Resolve, as well as a stored-HTML submission surface (such as bbPress anonymous replies) whose kses allow-list preserves img attributes; given these preconditions, a one-shot unauthenticated submission can execute arbitrary JavaScript in the context of any user who views the affected page.
Severity
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-01 17:35 UTC
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation
Assigner
Wordfence CNA under the mitre root
CNA scorecard C 65/100 over 2359 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
tigroumeow Meow Lightbox Affected: 0 , ≤ 5.6.4 (semver)
guessed Create a notification for this product.
Credits
Santh
Show details on NVD website
To clipboard 

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