TI-2026-83223 Aliases CVE-2026-9239 GHSA-93vw-w9vm-pp4x

Stored cross-site scripting in Meow Gallery via attachment alt text

LOW 28CWE-79Published 2026-10-30 · Updated 2026-10-30

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The Meow Gallery plugin for WordPress is affected in all versions up to and including 5.5.1. Insufficient input sanitization and output escaping of attachment alt text in the aria-label attribute allows stored cross-site scripting (CWE-79). An authenticated attacker with author-level access or higher can inject scripts that run when a user accesses an injected page.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

The Meow Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Attachment Alt Text (aria-label attribute) in all versions up to, and including, 5.5.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The vulnerable code path is only reachable when a gallery item is rendered as a link (i.e., link_href is non-empty), and exploitation relies on the fact that WordPress's sanitize_text_field() strips angle-bracketed tags but preserves double quotes, allowing an attacker to break out of the aria-label attribute context and inject event-handler attributes such as onclick.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0032 25th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
tigroumeow	Meow Gallery	up to 5.5.1	—	No fix listed	CNA

Meow Gallery Vendortigroumeow Affected up to 5.5.1 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Meow Gallery.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Timeline

2026-10-30 Threatist record created from CVE-2026-9239
2026-10-30 CISA SSVC decision points changed
2026-10-30 Priority changed: MEDIUM → LOW
2026-10-30 Alias added: GHSA-93vw-w9vm-pp4x

References

Other 8

TI-2025-10772 AI Engine <= 3.1.3 - Unauthenticated Sensitive Information Exposure to Privilege Escalation CVSS 3.1CRITICAL 9.8
TI-2023-28063 WordPress AI Engine plugin <= 1.9.98 - Unauthenticated Arbitrary File Upload vulnerability CVSS 3.1CRITICAL 10.0
TI-2024-09725 AI-Engine < 2.6.5 - Admin+ SQLi CVSS 3.1HIGH 7.2
TI-2024-05988 AI Engine < 2.5.1 - Admin+ RCE CVSS 3.1HIGH 7.2
TI-2024-19264 WordPress AI Engine plugin <= 2.1.4 - Server Side Request Forgery (SSRF) vulnerability CVSS 3.1MEDIUM 6.8
TI-2024-06230 AI Engine < 2.4.8 - Admin+ SQLi CVSS 3.1MEDIUM 4.7

See all 57 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences