CVE-2026-15283

Description

The WPvivid Backup for MainWP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 0.9.33 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

PUBLISHED Reserved 2026-07-09 | Published 2026-07-10 | Updated 2026-07-10 | Assigner Wordfence

Problem types

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

Product status

Timeline

Credits

shaman0x01 finder

References

www.wordfence.com/...-e251-4162-b38f-8dab4395a8a7?source=cve

plugins.trac.wordpress.org/...p-mainwp&sfp_email=&sfph_mail=

cve.org (CVE-2026-15283)

nvd.nist.gov (CVE-2026-15283)

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