CVE-2026-76581
Auth bypass in WPMU DEV Dashboard plugin allows admin takeover via HMAC replay.
Is CVE-2026-76581 being exploited?
Not confirmed. CVE-2026-76581 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.34% probability of exploitation in the next 30 days.
How severe is CVE-2026-76581?
CVE-2026-76581 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-76581?
Yes. A fix has been recorded for CVE-2026-76581. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-76581 affect?
CVE-2026-76581 affects WPMU DEV Dashboard plugin <= 5.0.1, WordPress sites using WPMU DEV Hub SSO, Administrator accounts mapped to Hub SSO. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-76581?
Update WPMU DEV Dashboard to the fixed release; disable Hub SSO until patched.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attacker can replay a signed HMAC to obtain an administrator session and fully control affected WordPress sites.
Immediate action required
- affected<= 5.0.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.