What the vulnerability does
01Description
WPGraphQL provides a GraphQL API for WordPress sites. Prior to version 2.9.1, the `wp-graphql/wp-graphql` repository contains a GitHub Actions workflow (`release.yml`) vulnerable to OS command injection through direct use of `${{ github.event.pull_request.body }}` inside a `run:` shell block. When a pull request from `develop` to `master` is merged, the PR body is injected verbatim into a shell command, allowing arbitrary command execution on the Actions runner. Version 2.9.1 contains a fix for the vulnerability.
Explanation of Vulnerability in Simple Terms
02Summary
WP GraphQL contains a code injection vulnerability in versions before 2.9.1. An attacker with low-level site access can inject and execute arbitrary code by crafting a malicious GraphQL query, but only if a victim visits a specially crafted link. The vulnerability affects data confidentiality and integrity across the site.
What an attacker can do
03Attacker Capabilities
Inject and execute arbitrary code on the site via a malicious GraphQL query.
Potential impact on your site
04Site Impact
An authenticated attacker can read sensitive data and modify site content if they can socially engineer a user to click a link.
Conditions required to exploit
05Prerequisites
Attacker needs low-level site access (e.g., subscriber account) and must trick a user into visiting a malicious link.
Key dates
06Disclosure timeline
February 26, 2026
CVE published
February 26, 2026
Record updated
