How severe is CVE-2026-33075?

CVE-2026-33075 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-33075 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33075?

CVE-2026-33075 affects Fastgpt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33075?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-33075 have an EU (EUVD) identifier?

Yes. CVE-2026-33075 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13645.

When was CVE-2026-33075 published?

CVE-2026-33075 was published on 2026-03-20 and last updated on 2026-06-17.

CVE-2026-33075

CVE-2026-33075 is a high-severity vulnerability in Fastgpt with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-494.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 9.4
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13645
Weakness: CWE-494
Affected product: Fastgpt
Published: 2026-03-20
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-33075?: 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.
How severe is CVE-2026-33075?: CVE-2026-33075 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-33075 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33075?: CVE-2026-33075 affects Fastgpt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33075?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-33075 have an EU (EUVD) identifier?: Yes. CVE-2026-33075 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13645.
When was CVE-2026-33075 published?: CVE-2026-33075 was published on 2026-03-20 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:fastgpt:fastgpt:*:*:*:*:*:*:*:*

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