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TI-2026-22282 Aliases CVE-2026-27938

WPGraphQL Repo Vulnerable to Command Injection via Unsanitized GitHub Actions Expression in Release Workflow

Priority HIGH 69CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00944 61st percentileScored 2026-11-07
Fix Fixed wp-graphql (wp-graphql): 2.9.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
WPGraphQLwp-graphqlbefore 2.9.12.9.1Patch availableCNA
  • wp-graphql VendorWPGraphQL Affected before 2.9.1 Fixed in 2.9.1 Patch available CNA

Remediation

  • Fix · CNA wp-graphql (wp-graphql) Fixed in 2.9.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-27938

References

Other 2

  • TI-2021-22572 WordPress Plugin WPGraphQL 1.3.5 Denial of Service CVSS 4.0HIGH 8.7
  • TI-2026-39574 WPGraphQL has deprecated `user` field on SendPasswordResetEmailPayload that leaks user… CVSS 4.0MEDIUM 6.9
  • TI-2026-60306 WPGraphQL: Contributor can publish and modify posts without the required capabilities via updatePost CVSS 3.1MEDIUM 5.4
  • TI-2026-25701 Missing authorization in WPGraphQL wp-graphql CVSS 3.1MEDIUM 4.3
  • TI-2026-83176 Email flooding in WPGraphQL via aliased password reset mutations CVSS 4.0MEDIUM 6.9
  • TI-2026-83174 Unbounded persisted query storage in WPGraphQL Smart Cache CVSS 4.0MEDIUM 6.9
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences