CVE Enrichment

CVSS
8.1 HIGH
EPSS
3.64%
EPSS Percentile
89.43%
CISA KEV
Not listed

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.

Technical Details

CVSS Version
3.1
CNA / NVD Source
security@wordfence.com
Published
11-Jun-2026 14:16
Last Modified
23-Jul-2026 16:10
EPSS Date
2026-10-20
CWE
CWE-347

CVSS Vector

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

References

Last enrichment sync: 21-Oct-2026 11:55
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (2)

People (3)

MITRE ATT&CK (4)

Vendors (1)

Products (5)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.