HighVulnerability

CVE-2026-33075: FastGPT workflow code execution and secret exfiltration by external contributors

Source: NVD(opens in a new tab)
Identifier: CVE-2026-33075
Published: March 20, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.3%

Summary

FastGPT versions 4.14.8.3 and below have a flaw in the fastgpt-preview-image.yml workflow. It uses pull_request_target, which runs with access to repository secrets, yet checks out code from the pull request author's fork, so any external contributor can achieve arbitrary code execution and secret exfiltration. The workflow also builds and pushes Docker images from attacker-controlled Dockerfiles, which enables a supply chain attack via the production container registry.

Mitigation

A patch was not available at the time of publication.

Details

Scores and exploitation

EPSS: 0.3%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on November 4, 2026.
Disclosure date: March 20, 2026

Weaknesses and techniques

Weakness (CWE): CWE-494
CWE-829
Attack pattern (CAPEC): CAPEC-437
AI threat technique (MITRE ATLAS): AML.T0010

Classification

Attack type: Supply chain
Attack sophistication: Moderate
AI component targeted: Plugin
Impact: Confidentiality,
Integrity
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-33075

First tracked: March 20, 2026 at 08:07 AM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 85% (self-assessed)

Topics

AI agents

Summary

Mitigation

Topics

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