The UpdraftPlus: WP Backup & Migration Plugin plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 1.26.4 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.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
davidanderson UpdraftPlus: WP Backup & Migration Plugin unaffected
Version Status Constraints
0 affected ≤ 1.26.4

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Project Subscriptions

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://plugins.svn.wordpress.org/updraftplus/tags/1.26.4/vendor/team-updraft/common-libs/src/updraft-rpc/class-udrpc.php cve-icon cve-icon
https://plugins.svn.wordpress.org/updraftplus/tags/1.26.4/vendor/team-updraft/common-libs/src/updraft-rpc/class-udrpc2.php cve-icon cve-icon
https://plugins.trac.wordpress.org/changeset/3561938/updraftplus/trunk/vendor/team-updraft/common-libs/src/updraft-rpc/class-udrpc2.php cve-icon cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/e901c2a0-2477-4b9a-8483-6002419e0a2f?source=cve cve-icon cve-icon
History

Thu, 11 Jun 2026 06:45:00 +0000

Type Values Removed Values Added
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 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.
Title UpdraftPlus: WP Backup & Migration Plugin <= 1.26.4 - Unauthenticated Authentication Bypass via UpdraftCentral udrpc
Weaknesses CWE-347
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-06-11T05:34:20.360Z

Reserved: 2026-06-03T21:07:44.434Z

Link: CVE-2026-10795

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-11T07:16:26.713

Modified: 2026-06-11T07:16:26.713

Link: CVE-2026-10795

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-11T07:30:08Z

Weaknesses