UpdraftPlus: WP Backup & Migration Plugin <= 1.26.4 (free) < 2.26.5 (premium) - Unauthenticated Authentication Bypass via UpdraftCentral udrpc

9.8
Improper Verification of Cryptographic Signature
CVE CVE-2026-10795
CVSS 9.8 (Critical)
Publicly Published June 10, 2026
Last Updated July 14, 2026
Researcher vtim

Description

The UpdraftPlus: WP Backup & Migration Plugin plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 1.26.4 (free) and versions up to 2.26.5 (premium) via the UpdraftPlus_Remote_Communications_V2::wp_loaded function. This is due to insufficient validation of the remote communications message format, where signature verification can be bypassed and unchecked decryption return values collapse to a predictable all-zero encryption key. This makes it possible for unauthenticated attackers to forge arbitrary RPC commands and run them as the connected administrator, such as uploading and activating a malicious plugin, which ultimately leads to remote code execution.

Wordfence blocked 186,532 attacks targeting this vulnerability in the past 24 hours.

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2 affected software packages

Software Type Plugin
Software Slug updraftplus
Patched? Yes
Remediation Update to version 2.26.5, or a newer patched version
Affected Version
  • 2.0 - 2.26.5 (exclusive)
Patched Version
  • 2.26.5
Software Type Plugin
Software Slug updraftplus (view on wordpress.org)
Patched? Yes
Remediation Update to version 1.26.5, or a newer patched version
Affected Version
  • <= 1.26.4
Patched Version
  • 1.26.5

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