# CVE-2026-49850: InvoicePlane: Missing CSRF Protection on State-Changing delete Actions

> An attacker can trick an authenticated administrator into deleting invoices or tax records via CSRF, leading to unauthorized data modification.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:H/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:** 25 Sep 2026
- **Updated:** 25 Sep 2026
- **Also known as:** GHSA-mhvh-4j3w-7pvj

## What is CVE-2026-49850?

CVE-2026-49850 is a high-severity vulnerability in InvoicePlane, published on 25 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. Prior to 1.7.2, InvoicePlane exposes Invoices::delete() and Invoices::delete_invoice_tax() as state-changing routes without requiring POST and validating a CSRF token. When an authenticated administrator loads attacker-controlled content that requests an affected route, the application can delete an invoice or invoice tax record. The cross-origin action can remove financial data without the administrator's intent. This issue is fixed in version 1.7.2.

Weakness: CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program), CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-49850?


## How do I fix CVE-2026-49850?

No fix has been published for CVE-2026-49850 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-49850 being exploited?

There is no known exploitation of CVE-2026-49850 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-49850 and fix it if it is affected.

What it is: CVE-2026-49850 is a high-severity vulnerability in InvoicePlane, published on 25 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-49850 in the wild and no public exploit code.

Affected product: InvoicePlane. 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-2026-49850/ (Markdown: https://insights.sbomify.com/CVE-2026-49850/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-49850
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-49850
- OSV: https://osv.dev/vulnerability/CVE-2026-49850

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-49850/
Summaries are generated and may contain mistakes; the official description above is the record.