CVE-2026-84776Network attack vectorHinoki check available

Unauthenticated service interruption via negative request parameter

Published Sep 3, 2026 · Updated Sep 3, 2026

Denial of service in BlogVault MalCare Security 6.69 and earlier allows remote attackers to interrupt WordPress sites via invalid requests. A rare negative parameter can keep request processing running instead of completing normally, increasing server load. No authentication or user interaction is required, and the reported consequence is availability loss without data exposure or modification.

CVSS severity7.5
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Denial of service in BlogVault MalCare Security 6.69 and earlier allows remote attackers to interrupt WordPress sites via invalid requests. A rare negative parameter can keep request processing running instead of completing normally, increasing server load. No authentication or user interaction is required, and the reported consequence is availability loss without data exposure or modification.

The record

CVE
CVE-2026-84776
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
BlogVault
Product
MalCare WordPress Security Plugin
Classifications
CWE-770, CAPEC-469, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=6.69 changes=[{"at":"6.72","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

BlogVault · MalCare WordPress Security Pluginversion=n/a <=6.69 changes=[{"at":"6.72","status":"unaffected"}]

Published CVSS scores

7.5PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
CAPEC-469HTTP DoS
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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