Threat intelligence

WPMU DEV Dashboard <= 5.0.1 - Authentication Bypass to Administrator via SSO HMAC Canonicalization Confusion

CVE-2026-76581 · wpmudev-updates

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Wpmudev Updates at a vulnerable version. How SiteRespond intelligence works

Vulnerability: WPMU DEV Dashboard <= 5.0.1 - Authentication Bypass to Administrator via SSO HMAC Canonicalization Confusion
Affected software: wpmudev-updates(Plugin)
Affected versions: ≤ 5.0.1
Authentication: Authenticated (see advisory title)
Vulnerability type: Authentication bypass
CVE: CVE-2026-76581
Published: 27 August 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow access to accounts or admin areas without valid credentials.
Source: Data imported from Wordfence Intelligence (advisory 3d4321c8-15a4-46f5-9b0e-2098a7fcfb5b). Methodology and redistribution notes

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