VulnCrest
Search
Create account
Report an incident
Radar sectionsDatabase
Check my site
WordPress plugin

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

CVE-2026-10795Published · Updated

Action summary

Affected: ≤1.26.4Update to 1.26.5 or newer

All remediation steps
Watch plugin
Severity
Critical9.8
CVSS
9.8
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:H Confidentiality
High
I:H Integrity
High
A:H Availability
High
Weakness
CWE-347 Improper Verification of Cryptographic Signature
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

UpdraftPlus Premium updraftplus

  1. Affected≤ 1.26.4
  2. Patched in1.26.5

Update to 1.26.5 or newer.

You are affected if you run ≤ 1.26.4. Version 1.26.5 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under UpdraftPlus Premium.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 1.26.5, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch UpdraftPlus Premium to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to vtim.

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.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in UpdraftPlus Premium

All 19
More vulnerabilities in UpdraftPlus Premium
SeverityVulnerabilityCVEPublished
Medium4.31.26.7 - Authenticated (Subscriber+) Information Exposure
<2.26.8.26Update to 1.26.8 or 2.26.8.26
CVE-2026-82841
Medium4.3Cross-Site Request Forgery
<1.26.7Update to 1.26.7
CVE-2026-76549
Medium6.1Backup/Restore <= 1.24.12 - Reflected Cross-Site Scripting
≤1.24.12Update to 1.25.1
CVE-2025-0215
High8.81.24.11 - Unauthenticated PHP Object Injection
1.23.8 – 1.24.11Update to 1.24.12
CVE-2024-10957
Medium5.4Cross-Site Request Forgery to Google Drive Storage Update
≤1.23.10Update to 1.23.11
CVE-2023-5982

Timeline

  1. CVE published

    Severity critical, CVSS 9.8

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

How we use these sources

Search VulnCrest Radar

Jump to

Are you sure?