# CVE-2026-88003: InvoicePlane: Failure to Revoke Administrative Privileges After Role Downgrade

> A downgraded user retains admin access via stale session data, allowing them to restore administrative privileges and escalate permissions.

- **Severity:** High 7.5 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **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-25xj-pj36-wpp8

## What is CVE-2026-88003?

CVE-2026-88003 is a high-severity 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 fails to revoke administrative privileges after a role downgrade because Admin_Controller trusts the user_type snapshot stored in an existing session instead of revalidating ip_users.user_type. When one administrator downgrades another account, the target's active session continues to authorize administrative requests. The downgraded user can use Users::form() to set user_type back to 1, restoring the database role and making the privilege escalation persistent. This vulnerability is fixed in 1.7.2.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2026-88003?


## How do I fix CVE-2026-88003?

No fix has been published for CVE-2026-88003 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-88003 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-88003 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-88003 and fix it if it is affected.

What it is: CVE-2026-88003 is a high-severity 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-2026-88003 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-2026-88003/ (Markdown: https://insights.sbomify.com/CVE-2026-88003/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-88003
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-88003
- OSV: https://osv.dev/vulnerability/CVE-2026-88003

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-88003/
Summaries are generated and may contain mistakes; the official description above is the record.