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Description

The Meow Gallery plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the REST API endpoint /wp-json/meow-gallery/v1/save_shortcode in all versions up to, and including, 5.4.4 This makes it possible for authenticated attackers, with Author-level access and above, to arbitrarily create or overwrite existing gallery shortcode records by supplying a user-controlled id value. The endpoint performs database update operations without verifying that the requesting user is authorized to modify the referenced gallery record or create their own.

PUBLISHED Reserved 2026-01-21 | Published 2026-06-13 | Updated 2026-06-13 | Assigner Wordfence




MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Problem types

CWE-639 Authorization Bypass Through User-Controlled Key

Product status

Default status
unaffected

Any version
affected

Timeline

2026-01-21:Vendor Notified
2026-06-12:Disclosed

Credits

Chawabhon Netisingha finder

References

www.wordfence.com/...-9c61-4b54-a451-1178ca6325cb?source=cve

plugins.trac.wordpress.org/...gallery/trunk/classes/rest.php

wordpress.org/plugins/meow-gallery/

plugins.trac.wordpress.org/changeset/3469543/meow-gallery

plugins.trac.wordpress.org/...gallery/trunk/classes/rest.php

plugins.trac.wordpress.org/...ath=%2Fmeow-gallery/tags/5.4.5

cve.org (CVE-2026-1291)

nvd.nist.gov (CVE-2026-1291)

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