Migration & Staging - Cross-Site Scripting (XSS) (CVE-2026-19725)

Q: Am I affected by this vulnerability?

You are affected if your site runs Migration & Staging. Versions below 0.9.131 are vulnerable; that release and later are not. No account is needed to exploit this, so a public site is reachable by anyone.

Q: How do I fix it?

Update Migration & Staging to version 0.9.131 or later. That is the complete fix. Until you can update, Request / payload inspection (WAF) in Hack Halt ProSecure contains this class of attack at the request layer.

Q: What can an attacker actually do?

This is a Cross-Site Scripting (XSS) flaw. An attacker who exploits it can run script in a visitor's browser, stealing sessions or planting an administrator account.

CVE-2026-19725

Vulnerability CVE-2026-19725 PLUGIN migration-staging CRITICAL

The WPvivid — Backup, Migration & Staging WordPress plugin before 0.9.131 does not sanitise a value taken from an unauthenticated request before using it to build a log file path, allowing an attacker holding a site to site transfer key to create a log file in any existing writable directory of the site, including the web root. The file name always carries a fixed suffix and the contents are always the WPvivid — Backup, Migration & Staging WordPress plugin before 0.9.131's own log header, so only the location of the file is attacker controlled.

CVE-2026-19725

CRITICAL CVSS 9.1 Published 2026-08-16 Updated 2026-08-26

AI Risk Critical (91/100) Active Exploit: No strong signal Published Exploit: No public exploit references Priority: P1 Immediate

Severity Band CRITICAL

CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected Components 4

Reference Links 1

AI Risk Engine Critical (91/100)

Exploitability High

Active Exploitation No strong signal

Published Exploit Status No public exploit references

Threat Timeline

2026-08-16 CVE published and first recorded in the threat feed.
2026-08-26 Record updated with latest vulnerability metadata.
2026-08-18 AI technical context refreshed for mitigation and impact guidance.
Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated 17 days ago

AI enriched 17 days ago (2026-08-18 23:15 UTC)

Technical Summary

Potential Impact

Severity is CRITICAL (CVSS 9.1). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as High based on low-bar exploit prerequisites.

Primary risk drivers: low-bar exploit prerequisites

Mitigation Recommendations

Validate affected product versions, prioritize patching, and monitor references for vendor remediation guidance. If immediate patching is not possible, apply compensating controls and limit exposure of vulnerable surfaces.

Detection & Monitoring

Track authentication anomalies, unexpected file writes, and suspicious plugin API activity around affected components.

Business Impact Lens

AI risk score 91/100 (Critical, High) with priority P1 Immediate. Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

Migration & Staging PLUGIN · migration-staging Affected: < 0.9.131 Fixed in: 0.9.131

root. The file name always carries a fixed suffix and the contents are always the WPvivid PLUGIN · root-the-file-name-always-carries-a-fixed-suffix-and-the-contents-are-always-the-wpvivid Affected: < 0.9.131 Fixed in: 0.9.131

Staging PLUGIN · staging Affected: < 0.9.131 Fixed in: 0.9.131

WPvivid PLUGIN · wpvivid Affected: < 0.9.131 Fixed in: 0.9.131

References

https://wpscan.com/vulnerability/999889f4-f8be-4b44-b665-1a94df8d050d/

What to do about this

Patch immediately Serious, and reachable without meaningful privilege.

Fix it

Update Migration & Staging to 0.9.131 or later.

That is the complete fix. Everything below is what protects you in the meantime.

Cannot update today? Request / payload inspection (WAF) in Hack Halt ProSecure blocks this class of attack before WordPress processes the request.

Inspect request parameters and bodies for injection, traversal and file-inclusion payloads, and refuse the request rather than logging it.

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Not sure if you are affected?

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Am I affected by this vulnerability?