CVE-2026-40252: FastGPT is an AI Agent building platform

Q: How do I fix CVE-2026-40252?

fastgpt: upgrade to 4.14.10.4. Exact commands for each OS are on this page.

Q: Is CVE-2026-40252 being exploited?

CVE-2026-40252 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-40252 affect?

CVE-2026-40252 affects fastgpt. Severity is high (CVSS 8.1). FastGPT is an AI Agent building platform. Prior to 4.14.10.4, Broken Access Control vulnerability (IDOR/BOLA) allows any authenticated team to access and execute applications belonging to other teams by supplying a foreign appId. While the

Routine

HIGH 8.1UPGRADE

CVE-2026-40252 is a high-severity flaw (CVSS 8.1) affecting fastgpt. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

FastGPT is an AI Agent building platform. Prior to 4.14.10.4, Broken Access Control vulnerability (IDOR/BOLA) allows any authenticated team to access and execute applications belonging to other teams by supplying a foreign appId. While the API correctly validates the team token, it does not verify that the requested application belongs to the authenticated team. This leads to cross-tenant data exposure and unauthorized execution of private AI wor

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 73%)
CISA exploited list	No
Weakness	CWE-284, CWE-639
Published	2026-04-10
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: fastgpt

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-10 21:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

fastgpt fastgpt UPGRADE

Affected: < 4.14.10.4

Fixed in: 4.14.10.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy fastgpt || rpm -q fastgpt || fastgpt --version

2. UPGRADE to 4.14.10.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade fastgpt

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade fastgpt

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-40252?

fastgpt: upgrade to 4.14.10.4. Exact commands for each OS are on this page.

Is CVE-2026-40252 being exploited?

CVE-2026-40252 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-40252 affect?

CVE-2026-40252 affects fastgpt. Severity is high (CVSS 8.1). FastGPT is an AI Agent building platform. Prior to 4.14.10.4, Broken Access Control vulnerability (IDOR/BOLA) allows any authenticated team to access and execute applications belonging to other teams by supplying a foreign appId. While the

How urgent is CVE-2026-40252?

Priority 35/100. High severity

Related CVEs

CVE-2026-40351 CRITICAL 9.8 UPGRADE FastGPT is an AI Agent building platform
CVE-2026-40352 HIGH 8.8 UPGRADE FastGPT is an AI Agent building platform
CVE-2026-40100 MEDIUM 5.3 UPGRADE FastGPT is an AI Agent building platform

References

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