CVE-2026-50562

FastGPT: Untrusted PR artifacts are pushed and deployed by privileged preview workflows

State: Published
Severity: 9.3 Critical
Published: Jul 15, 2026
Updated: Jul 15, 2026
Reserved: Jun 4, 2026

Description

FastGPT is a knowledge-based AI application platform. At commit 22ebfacbb43311e9b73294040ae0eb87390c6bba and earlier, artifacts built from untrusted pull request code in .github/workflows/preview-docs-build.yml and .github/workflows/preview-fastgpt-build.yml can be downloaded by privileged workflow_run jobs in .github/workflows/preview-docs-push.yml and .github/workflows/preview-fastgpt-push.yml, allowing attacker-controlled Docker images from the document/ tree or FastGPT build context to be pushed to GHCR and, for documentation previews, deployed with secrets.KUBE_CONFIG_CN.

Scores

CVSS	Score	Vector	Source
4.0	9.3 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:L	GitHub_M

Weaknesses

CWE-266 Incorrect Privilege Assignment
CWE-494 Download of Code Without Integrity Check
CWE-829 Inclusion of Functionality from Untrusted Control Sphere

Affected Products

Product	Versions
FastGPTlabring	<= 22ebfacbb43311e9b73294040ae0eb87390c6bbaAffected

References

https://github.com/labring/FastGPT/security/advisories/GHSA-rvgc-2c29-g876

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