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Email Subscribers Plugin CVE-2026-11592

| EUVDEUVD-2026-41248 MEDIUM
Missing Authorization (CWE-862)
2026-07-02 security@wordfence.com GHSA-7qrc-923r-c8cr
4.3
CVSS 3.1 · Vendor: wordfence
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Severity by source

Vendor (wordfence) PRIMARY
4.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
vuln.today AI
4.3 MEDIUM

Network-accessible requiring contributor credentials (PR:L); integrity limited to plugin-scoped data modification (I:L); no confidentiality or availability impact within the vulnerable system.

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

Primary rating from Vendor (wordfence).

CVSS VectorVendor: wordfence

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

Lifecycle Timeline

2
Analysis Generated
Jul 02, 2026 - 06:32 vuln.today
CVE Published
Jul 02, 2026 - 06:16 nvd
MEDIUM 4.3

DescriptionCVE.org

The Email Subscribers & Newsletters - Email Marketing, Post Notifications & Newsletter Plugin for WordPress plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 5.9.27. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to overwrite plugin mail settings (from name and from email address), create audience lists, insert arbitrary contacts into those lists, create and overwrite newsletter broadcasts and post notifications, add workflows, and queue and dispatch mass email to arbitrary recipients.

AnalysisAI

Authorization bypass in the Email Subscribers & Newsletters WordPress plugin (all versions through 5.9.27) allows contributor-level authenticated users to hijack the site's email infrastructure - overwriting sender identity, creating mailing lists, injecting arbitrary contacts, and dispatching mass email to arbitrary external recipients. The CVSS vector (AV:N/AC:L/PR:L/UI:N) confirms low-complexity, network-accessible exploitation requiring only a contributor account, which is commonly available on multi-author WordPress sites. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain contributor WordPress account
Delivery
Authenticate to target site
Exploit
Issue unauthorized plugin admin requests
Execution
Overwrite From name and email address
Persist
Import arbitrary phishing contact list
Impact
Dispatch mass email campaign via site relay

Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated WordPress session with at minimum contributor-level role. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The NVD CVSS score of 4.3 (Medium) reflects bounded impact - no confidentiality breach (C:N) and no availability disruption (A:N) - but understates the real-world abuse potential. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker registers a contributor account on a WordPress site with open registration enabled, or compromises an existing contributor credential via phishing. The attacker then sends crafted POST requests to the plugin's admin AJAX handlers - mimicking legitimate plugin actions but without holding administrator capabilities - to overwrite the From email to impersonate the organization, import a list of phishing targets, and queue a mass email broadcast. …
Remediation Update the Email Subscribers & Newsletters plugin to the latest version available in the WordPress plugin repository, which should include the fix introduced in trac changeset 3584584. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-11592 vulnerability details – vuln.today

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