# CVE-2026-19340: anubissbe ProjectHub-Mcp Webhooks API complete_backend.js server-side request forgery

> Remote attackers can exploit a server-side request forgery vulnerability in the Webhooks API of ProjectHub-Mcp to access internal resources.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **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:** 9 Aug 2026
- **Updated:** 13 Aug 2026
- **Also known as:** GHSA-qp9j-gfjj-6h3v

## What is CVE-2026-19340?

CVE-2026-19340 is a medium-severity server-side request forgery vulnerability in anubissbe ProjectHub-Mcp, published on 9 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A weakness has been identified in anubissbe ProjectHub-Mcp up to 5.0.0. This affects an unknown function of the file backend-fix/complete_backend.js of the component Webhooks API. This manipulation of the argument url causes server-side request forgery. Remote exploitation of the attack is possible. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2026-19340?


## How do I fix CVE-2026-19340?

No fix has been published for CVE-2026-19340 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-19340 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19340 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-19340 and fix it if it is affected.

What it is: CVE-2026-19340 is a medium-severity server-side request forgery vulnerability in anubissbe ProjectHub-Mcp, published on 9 Aug 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-2026-19340 exists.

Affected product: anubissbe ProjectHub-Mcp. 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-2026-19340/ (Markdown: https://insights.sbomify.com/CVE-2026-19340/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-19340
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-19340
- OSV: https://osv.dev/vulnerability/CVE-2026-19340

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-19340/
Summaries are generated and may contain mistakes; the official description above is the record.