CVE-2023-27447

WP SMS <= 6.0.4 - Information Disclosure via REST API

2023-03-02 00:00

Strategic Overview

Status: Patched in 6.0.4.1
Affected Plugin: WSMS (formerly WP SMS) – SMS & MMS Notifications with OTP and 2FA for WooCommerce
Affected Version: <= 6.0.4
CVSS: 5.3Medium
Weakness type: CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
CVE: CVE-2023-27447

View all WSMS (formerly WP SMS) – SMS & MMS Notifications with OTP and 2FA for WooCommerce vulnerabilities

At a glance

CVE-2023-27447 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the WSMS (formerly WP SMS) WordPress plugin, affecting versions <= 6.0.4. 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 6.0.4.1; sites on affected versions should update now. Disclosed March 2023, reported by Jarko Piironen.

Vulnerability Overview

The WP SMS plugin for WordPress is vulnerable to information disclosure via the REST API in versions up to, and including, 6.0.4. This allows unauthenticated attackers to retrieve a list of newsletter subscribers.

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 WSMS (formerly WP SMS) <= 6.0.4 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 WSMS (formerly WP SMS) the fix is 6.0.4.1: builds <= 6.0.4 are affected, anything from 6.0.4.1 onward is not.

Remediation

Update to version 6.0.4.1, or a newer patched version

How does WordSec protect against this?

The fix is the thing that ends this: WSMS (formerly WP SMS) 6.0.4.1 closes this, and updating the plugin is the step that ends it.

Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-27447 https://www.wordfence.com/threat-intel/vulnerabilities/id/57377380-0435-4747-abba-50063978d8e1 https://nvd.nist.gov/vuln/detail/CVE-2023-27447

Related records

Same weakness class

4.3CVE-2026-40790: WSMS Information ExposureCVE-2026-40790

Other vulnerabilities in WSMS (formerly WP SMS) – SMS & MMS Notifications with OTP and 2FA for WooCommerce

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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