CVE-2026-33075Public exploitNetwork attack vector

Code execution via untrusted pull request checkout

Published Mar 20, 2026 · Updated Mar 20, 2026

Code execution in FastGPT 4.14.8.3 and earlier allows remote authenticated users to steal repository secrets via a crafted pull request. The fastgpt-preview-image.yml pull_request_target workflow checks out the contributor's fork, logs into the Aliyun registry, and builds and pushes an attacker-controlled Dockerfile. Any external GitHub contributor can trigger the job; successful exploitation exposes registry credentials and permits malicious preview or production image publication.

CVSS severity9.4
Critical
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code execution in FastGPT 4.14.8.3 and earlier allows remote authenticated users to steal repository secrets via a crafted pull request. The fastgpt-preview-image.yml pull_request_target workflow checks out the contributor's fork, logs into the Aliyun registry, and builds and pushes an attacker-controlled Dockerfile. Any external GitHub contributor can trigger the job; successful exploitation exposes registry credentials and permits malicious preview or production image publication.

The record

CVE
CVE-2026-33075
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
Labring
Product
FastGPT
Classifications
CWE-494, CWE-829, T1195.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 4.14.8.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Labring · FastGPTversion=<= 4.14.8.3

Published CVSS scores

9.4GitHub, Inc.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
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-494Download of Code Without Integrity Check
CWE-829Inclusion of Functionality from Untrusted Control Sphere
T1195.002Compromise Software Supply Chain

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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