CVE-2023-28421

WordPress Email Marketing Plugin – WP Email Capture <= 3.10 - Information Exposure via wp_email_capture_options_process

2023-03-15 00:00

Strategic Overview

Status: Patched in 3.11
Affected Plugin: Email Marketing Plugin – WP Email Capture
Affected Version: <= 3.10
CVSS: 5.3Medium
Weakness type: CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
CVE: CVE-2023-28421

View all Email Marketing Plugin – WP Email Capture vulnerabilities

At a glance

CVE-2023-28421 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the Email Marketing Plugin WordPress plugin, affecting versions <= 3.10. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 3.11; sites on affected versions should update now. Disclosed March 2023, reported by Nguyen Anh Tien.

Vulnerability Overview

The WordPress Email Marketing Plugin – WP Email Capture plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 3.10 via the wp_email_capture_options_process function hooked via admin_init. This makes it possible for unauthenticated attackers to extract sensitive data including user emails.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Reaching this weakness in Email Marketing Plugin <= 3.10 takes a caller who can reach the endpoint. Sensitive information exposure means data the application intended to keep internal is returned to a caller who should not be able to see it.

The disclosed data — credentials, tokens, customer records or internal paths — is usually worth more as material for a follow-up attack than as an end in itself. For Email Marketing Plugin the fix is 3.11: builds <= 3.10 are affected, anything from 3.11 onward is not.

Remediation

Update to version 3.11, or a newer patched version

How does WordSec protect against this?

The fix is the thing that ends this: Email Marketing Plugin 3.11 closes this, and updating the plugin is the step that ends it.

Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-28421 https://www.wordfence.com/threat-intel/vulnerabilities/id/b4570948-1625-44b3-8af6-73765d9710ee https://nvd.nist.gov/vuln/detail/CVE-2023-28421

Related records

Other vulnerabilities in Email Marketing Plugin – WP Email Capture

CVSS Vector

5.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone

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