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Vulnerabilities

Vulnerability · CVE-2026-27938

WPGraphQL provides a GraphQL API for WordPress sites.

Published Feb 26, 2026 · catalog updated Jun 17, 2026 · WPGraphQL provides a GraphQL

Check if you run it

No confirmed exploitation is on record for CVE-2026-27938. EPSS is 1.40%. Act only if a listed version of WPGraphQL provides a GraphQL is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (WPGraphQL provides a GraphQL).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.40%
Remediation
Advisory link
Affected products
See sources for product scope

WPGraphQL provides a GraphQL API for WordPress sites. Prior to version 2.9.1, the repository contains a GitHub Actions workflow ( ) vulnerable to OS command injection through direct use of inside a shell block. When a pull request from to 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.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-27938

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-27938. EPSS is 1.40%. Act only if a listed version of WPGraphQL provides a GraphQL is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-78: OS Command Injection. EPSS 1.40%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 26, 2026 · NIST NVD

    Detected

    WPGraphQL provides a GraphQL API for WordPress sites. Prior to version 2.9.1, the repository contains a GitHub Actions workflow ( ) vulnerable to OS command injection through direct use of inside a shell block. When a pull request from to 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 th

  2. Jun 17, 2026 · NIST NVD

    Updated

    WPGraphQL provides a GraphQL API for WordPress sites. Prior to version 2.9.1, the repository contains a GitHub Actions workflow ( ) vulnerable to OS command injection through direct use of inside a shell block. When a pull request from to 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 th

Sources

  • CVE.orgVulnerability recordCVE-2026-27938

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-27938

    30-day exploitation probability 1.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-27938

    WPGraphQL provides a GraphQL API for WordPress sites. Prior to version 2.9.1, the repository contains a GitHub Actions workflow ( ) vulnerable to OS command injection through direct use of inside a

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.