CVE-2026-33075

FastGPT has Arbitrary Code Execution in GitHub Actions via pull_request_target in fastgpt-preview-image.yml

State: Published
Severity: 9.4 Critical
Published: Mar 20, 2026
Updated: Mar 20, 2026
Reserved: Mar 17, 2026

Description

FastGPT is an AI Agent building platform. In versions 4.14.8.3 and below, the fastgpt-preview-image.yml workflow is vulnerable to arbitrary code execution and secret exfiltration by any external contributor. It uses pull_request_target (which runs with access to repository secrets) but checks out code from the pull request author's fork, then builds and pushes Docker images using attacker-controlled Dockerfiles. This also enables a supply chain attack via the production container registry. A patch was not available at the time of publication.

Scores

CVSS	Score	Vector	Source
4.0	9.4 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H	GitHub_M

Weaknesses

CWE-494 Download of Code Without Integrity Check
CWE-829 Inclusion of Functionality from Untrusted Control Sphere

Affected Products

Product	Versions
FastGPTlabring	<= 4.14.8.3Affected

References

https://github.com/labring/FastGPT/security/advisories/GHSA-xfx8-w35j-485c

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