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CVE-2026-19725 – Unauthenticated Path Traversal (Arbitrary Log File Creation) – WPvivid Backup, Migr

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Summary

CVE-2026-19725 is an unauthenticated path traversal vulnerability (CWE-22) in the WPvivid — Backup, Migration & Staging WordPress plugin. The flaw exists in the send_to_site_connect functionality, which fails to sanitize an attacker-supplied value before using it to build a log file path. It affects all plugin versions prior to 0.9.131 and has been assigned a CVSS v3.1 base score of 9.1 (Critical).

Technical details

  • Root cause: The plugin does not properly sanitize a value taken from an unauthenticated request before using it to construct the path of a log file.
  • Trigger conditions: An attacker in possession of the site’s site-to-site transfer key can invoke the send_to_site_connect functionality remotely, without valid WordPress credentials.
  • Attack vector: Network-based, no authentication or user interaction required (AV:N/PR:N/UI:N).
  • Impact: The attacker can direct the plugin to write a log file into any writable directory on the site, including the web root. The file name carries a fixed suffix and its contents are the plugin’s own fixed log header — attacker control is limited to the file’s location, not its content or name pattern.

Affected software

  • WPvivid — Backup, Migration & Staging (WordPress plugin, published as "Wpvivid Backuprestore") — all versions prior to 0.9.131

Severity

  • CVSS v3.1 Base Score: 9.1 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Mitigation and recommended actions

  • Immediate: Upgrade the WPvivid — Backup, Migration & Staging plugin to version 0.9.131 or later.
  • If patching is not immediately possible: Rotate/invalidate any existing site-to-site transfer keys, restrict or disable the plugin’s remote site-connect feature, and monitor writable web-accessible directories for unexpected log files.

How IONIX identifies potentially affected assets

IONIX matches the following signal against data already collected when it crawled the asset; identifying the technology sends no request beyond that crawl.

  • Raw response body: /wp-content/plugins/wpvivid-backuprestore/

References

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Map your entire attack surface (continously)

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6

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Results are routed through integrations with ticketing, SOAR, and SIEM tools. Issues are written in plain language, bundled into remediation clusters, and prioritized based on asset criticality, exploitability, and blast radius. This shortens mean time to remediation (MTTR) and empowers teams to act with confidence.

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