by Kastro
Paper/Archive/CVE-2026-33075

CVE-2026-33075

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

EPSS 0.3%CVSS 9.4
critical.is priorityof 100
33
CVSS 9.4 (CNA)9.4 / 10 × 3028.2Not in CISA KEV+300.0EPSS percentile 23.0.230 × 204.6No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
FastGPT<= 4.14.8.3–CNA

Scores by source

GitHub_M (CNA)9.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/labring/FastGPT/security/advisories/GHSA-xfx8-w35j-485c