CVE-2023-2987

Wordapp <= 1.6.0 - Authorization Bypass through Use of Insufficiently Unique Cryptographic Signature

2023-05-30 00:00

Strategic Overview

Status: Patched in 1.7.0
Affected Plugin: Wordapp
Affected Version: <= 1.6.0
CVSS: 9.8Critical
Weakness type: CWE-345 · Insufficient Verification of Data Authenticity
CVE: CVE-2023-2987

At a glance

CVE-2023-2987 is a critical-severity Insufficient Verification of Data Authenticity vulnerability in the Wordapp WordPress plugin, affecting versions <= 1.6.0. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 1.7.0; sites on affected versions should update now. Disclosed May 2023, reported by István Márton.

Vulnerability Overview

The Wordapp plugin for WordPress is vulnerable to authorization bypass due to an use of insufficiently unique cryptographic signature on the 'wa_pdx_op_config_set' function in versions up to, and including, 1.6.0. This makes it possible for unauthenticated attackers to the plugin to change the 'validation_token' in the plugin config, providing access to the plugin's remote control functionalities, such as creating an admin access URL, which can be used for privilege escalation.

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. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-345: Insufficient Verification of Data Authenticity

The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

Remediation

Update to version 1.7.0, or a newer patched version

How does WordSec protect against this?

The fix is the thing that ends this: Wordapp 1.7.0 closes this, and updating the plugin is the step that ends it.

Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-2987 https://www.wordfence.com/threat-intel/vulnerabilities/id/80440bfa-4a02-4441-bbdb-52d7dd065a9d https://nvd.nist.gov/vuln/detail/CVE-2023-2987

Related records

Other vulnerabilities in Wordapp

5.3CVE-2025-30927: Wordapp <= 1.7.0 Missing AuthorizationCVE-2025-30927

CVSS Vector

9.8

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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