# CVE-2026-40352: FastGPT: NoSQL Injection in updatePasswordByOld Leads to Account Takeover

> An authenticated attacker can exploit NoSQL injection in the password change endpoint to bypass verification and take over accounts.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Apr 2026
- **Updated:** 20 Apr 2026
- **Also known as:** GHSA-422w-vrfj-72g6

## What is CVE-2026-40352?

CVE-2026-40352 is a high-severity SQL injection vulnerability in labring FastGPT, published on 17 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

FastGPT is an AI Agent building platform. In versions prior to 4.14.9.5, the password change endpoint is vulnerable to NoSQL injection. An authenticated attacker can bypass the "old password" verification by injecting MongoDB query operators. This allows an attacker who has gained a low-privileged session to change the password of their account (or others if combined with ID manipulation) without knowing the current one, leading to full account takeover and persistence. This issue has been fixed in version 4.14.9.5.

Weakness: CWE-943 (Improper Neutralization of Special Elements in Data Query Logic)

## Which versions are affected by CVE-2026-40352?

It affects 1 product.


Products: Fastgpt Fastgpt.

## How do I fix CVE-2026-40352?

No fix has been published for CVE-2026-40352 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-40352 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40352 exists.

## Other vulnerabilities in labring FastGPT

- [CVE-2026-34162](https://insights.sbomify.com/CVE-2026-34162/): FastGPT: Unauthenticated SSRF via httpTools Endpoint Leads to Internal API Key Theft (critical 10.0)
- [CVE-2026-40351](https://insights.sbomify.com/CVE-2026-40351/): FastGPT: NoSQL Injection in loginByPassword leads to Authentication Bypass (critical 9.8)
- [CVE-2026-33075](https://insights.sbomify.com/CVE-2026-33075/): FastGPT has Arbitrary Code Execution in GitHub Actions via pull_request_target in fastgpt-preview-image.yml (critical 9.4)
- [CVE-2026-34163](https://insights.sbomify.com/CVE-2026-34163/): Server-Side Request Forgery via MCP Tools Endpoint in FastGPT (high 7.7)
- [CVE-2026-26075](https://insights.sbomify.com/CVE-2026-26075/): Cross-Site Request Forgery (CSRF) in FastGPT (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-40352 and fix it if it is affected.

What it is: CVE-2026-40352 is a high-severity SQL injection vulnerability in labring FastGPT, published on 17 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40352 exists.

Affected product: labring FastGPT. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-40352/ (Markdown: https://insights.sbomify.com/CVE-2026-40352/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-40352
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40352
- OSV: https://osv.dev/vulnerability/CVE-2026-40352

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-40352/
Summaries are generated and may contain mistakes; the official description above is the record.