# CVE-2026-54790: InvoicePlane: Second-order SQL injection through the unvalidated custom_field_table field in the Custom Fields module

> An attacker can execute arbitrary SQL queries and cause denial of service by exploiting unvalidated custom field table names in InvoicePlane.

- **Severity:** Medium 6.0 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Sep 2026
- **Updated:** 28 Sep 2026
- **Also known as:** GHSA-vv4r-cgmw-w6x2

## What is CVE-2026-54790?

CVE-2026-54790 is a medium-severity SQL injection vulnerability in InvoicePlane, published on 25 Sep 2026. An attacker needs administrator access to exploit it, 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 stores an administrator-controlled custom_field_table value without validating it against the allowed custom-field table names. Mdl_custom_fields::used() later concatenates that stored value into the FROM table and WHERE column identifier positions, so opening the custom-field edit form executes a second-order SQL injection. The injection can query arbitrary schema data and can cause application errors or denial of service. This issue is fixed in version 1.7.2.

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command)

## Which versions are affected by CVE-2026-54790?


## How do I fix CVE-2026-54790?

No fix has been published for CVE-2026-54790 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-54790 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54790 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-54790 and fix it if it is affected.

What it is: CVE-2026-54790 is a medium-severity SQL injection vulnerability in InvoicePlane, published on 25 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54790 exists.

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-2026-54790/ (Markdown: https://insights.sbomify.com/CVE-2026-54790/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-54790
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-54790
- OSV: https://osv.dev/vulnerability/CVE-2026-54790

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-54790/
Summaries are generated and may contain mistakes; the official description above is the record.