CVE-2026-15283: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in wpvividplugins WPvivid Backup for MainWP
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.
AI Analysis
Technical Summary
CVE-2026-15283 describes a stored cross-site scripting vulnerability in the WPvivid Backup for MainWP WordPress plugin. The issue exists in all versions up to and including 0.9.33 due to improper neutralization of input during web page generation, specifically insufficient sanitization and escaping of admin settings input. Authenticated users with administrator-level permissions can inject arbitrary scripts that execute when a user accesses the affected page. The vulnerability specifically impacts multi-site WordPress installations and installations where the unfiltered_html capability is disabled.
Potential Impact
An attacker with administrator-level access can inject malicious scripts into the plugin's admin settings pages. These scripts execute in the context of users viewing the injected pages, potentially leading to information disclosure or session hijacking. The vulnerability does not affect availability and requires high privileges and specific WordPress configurations (multi-site or unfiltered_html disabled).
Mitigation Recommendations
No official fix or patch is currently available for this vulnerability. Users should monitor the vendor's advisory for updates. Until a patch is released, restrict administrator access to trusted users only and consider avoiding multi-site configurations or enabling unfiltered_html if feasible. Review and sanitize inputs manually where possible. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
CVE-2026-15283: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in wpvividplugins WPvivid Backup for MainWP
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.
CVSS v3.1
Score 4.4medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-15283 describes a stored cross-site scripting vulnerability in the WPvivid Backup for MainWP WordPress plugin. The issue exists in all versions up to and including 0.9.33 due to improper neutralization of input during web page generation, specifically insufficient sanitization and escaping of admin settings input. Authenticated users with administrator-level permissions can inject arbitrary scripts that execute when a user accesses the affected page. The vulnerability specifically impacts multi-site WordPress installations and installations where the unfiltered_html capability is disabled.
Potential Impact
An attacker with administrator-level access can inject malicious scripts into the plugin's admin settings pages. These scripts execute in the context of users viewing the injected pages, potentially leading to information disclosure or session hijacking. The vulnerability does not affect availability and requires high privileges and specific WordPress configurations (multi-site or unfiltered_html disabled).
Mitigation Recommendations
No official fix or patch is currently available for this vulnerability. Users should monitor the vendor's advisory for updates. Until a patch is released, restrict administrator access to trusted users only and consider avoiding multi-site configurations or enabling unfiltered_html if feasible. Review and sanitize inputs manually where possible. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-07-09T15:49:03.889Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a50809268715ace4306367b
Added to database: 07/10/2026, 05:18:10 UTC
Last enriched: 07/10/2026, 05:48:43 UTC
Last updated: 07/10/2026, 09:29:30 UTC
Views: 5
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