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Description

The Yoast SEO – Advanced SEO with real-time guidance and built-in AI plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the the `yoast-schema` block attribute in all versions up to, and including, 26.8 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 a user accesses an injected page.

PUBLISHED Reserved 2026-01-21 | Published 2026-02-06 | Updated 2026-02-06 | Assigner Wordfence




MEDIUM: 6.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status
unaffected

* (semver)
affected

Timeline

2026-01-09:Discovered
2026-02-05:Disclosed

Credits

suyoung kim finder

References

www.wordfence.com/...-ed2f-439b-9cee-f2e5d46121b6?source=cve

plugins.trac.wordpress.org/...resenters/schema-presenter.php

plugins.trac.wordpress.org/...26.8/inc/class-wpseo-utils.php

plugins.trac.wordpress.org/...enerators/schema-generator.php

cve.org (CVE-2026-1293)

nvd.nist.gov (CVE-2026-1293)

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