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Description

The Blocksy theme for WordPress is vulnerable to Stored Cross-Site Scripting via the `blocksy_meta` metadata fields in all versions up to, and including, 2.1.30 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 2026-02-16 | Published 2026-03-02 | Updated 2026-03-02 | 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

2026-02-13:Discovered
2026-02-16:Vendor Notified
2026-03-02:Disclosed

Credits

Quốc Huy finder

References

www.wordfence.com/...-0c7b-4ce3-89d2-5503dff6e59c?source=cve

themes.trac.wordpress.org/changeset/315531/

cve.org (CVE-2026-2583)

nvd.nist.gov (CVE-2026-2583)

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