CVE-2023-49773 CRITICAL

CVE-2023-49773: WordPress BCorp Shortcodes Plugin <= 0.23 is vulnerable to PHP Object Injection

Vendor Tim Brattberg

Product BCorp Shortcodes

Weakness CWE-502 · Unsafe deserialization

Published December 20, 2023

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

10.0/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality High

Integrity High

CVSS vector

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

What the vulnerability does

01Description

Deserialization of Untrusted Data vulnerability in Tim Brattberg BCorp Shortcodes.This issue affects BCorp Shortcodes: from n/a through 0.23.

Explanation of Vulnerability in Simple Terms

02Summary

BCorp Shortcodes versions 0.23 and earlier contain a deserialization vulnerability that allows unauthenticated attackers to run arbitrary code on the site without user interaction. The vulnerability stems from unsafe handling of serialized data, enabling remote code execution. All users should update immediately to a patched version.

What an attacker can do

03Attacker Capabilities

Run arbitrary code on the site and take complete control of it.

Potential impact on your site

04Site Impact

Complete site compromise: attackers can steal data, modify content, install malware, or take the site offline.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

December 20, 2023 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-49773 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/502.html AskarLabs — CWE-502 write-up Deserialization of Untrusted Data

Related vulnerabilities

Identifiers

CVE CVE-2023-49773

CWE CWE-502

CVSS 10.0 / CRITICAL

Affected versions