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Email Essentials CVE-2026-81764

| EUVDEUVD-2026-68788 HIGH
Cross-site Scripting (XSS) (CWE-79)
2026-08-31 Patchstack GHSA-xvv3-94fm-vpp2
7.1
CVSS 3.1 · Vendor: Patchstack
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Severity by source

Vendor (Patchstack) PRIMARY
7.1 HIGH
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
vuln.today AI
6.1 MEDIUM

Network-accessible reflected XSS with scope change; availability impact is N because XSS does not meaningfully disrupt service availability.

3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

Lifecycle Timeline

2
Analysis Generated
Aug 31, 2026 - 21:07 vuln.today
CVE Published
Aug 31, 2026 - 20:30 cve.org
HIGH 7.1

DescriptionCVE.org

Unauthenticated Cross Site Scripting (XSS) in Email Essentials <= 6.0.6 versions.

AnalysisAI

Unauthenticated Cross-Site Scripting in the Email Essentials WordPress plugin by Acato (all versions through 6.0.6) allows remote attackers to inject and execute arbitrary JavaScript in a victim's browser by tricking them into visiting a crafted URL. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:C) confirms the attack is network-accessible, requires no privileges, and carries a scope change indicating the injected script runs in the victim's browser context rather than the server's. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation No authentication is required (PR:N per the CVSS vector), confirming the vulnerability is exploitable by any remote, unauthenticated attacker. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 7.1 score reflects a genuine but user-interaction-gated risk: while exploitation requires no authentication and no complex preconditions (AV:N/AC:L/PR:N), it does require a victim to follow a crafted link (UI:R), which limits opportunistic mass exploitation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Update the Email Essentials plugin to a version beyond 6.0.6 as documented in the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/email-essentials/vulnerability/wordpress-email-essentials-plugin-6-0-6-cross-site-scripting-xss-vulnerability - the exact patched release version was not stated in the available data and should be confirmed there before upgrading. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, identify all WordPress installations using Email Essentials by Acato and document the installed version; if your organization uses this plugin in any production environment, immediately deactivate and remove it. …

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CVE-2026-81764 vulnerability details – vuln.today

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