# CVE-2026-88891: OpenPanel through 2.3.0 Read-Only Access Level Enforcement Bypass via Mutations

> Read-only users can bypass access controls to modify, delete, or publish project data due to missing validation in mutation resolvers.

- **Severity:** High 7.2 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **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:** 10 Sep 2026
- **Updated:** 27 Oct 2026
- **Also known as:** GHSA-f9rx-pxgw-c6rg, GHSA-hpwh-25jq-4wxm

## What is CVE-2026-88891?

CVE-2026-88891 is a high-severity missing authorization vulnerability in Openpanel-dev openpanel, published on 10 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

OpenPanel through 2.3.0 fails to enforce read-only project access level on 26 of 29 mutating procedures, allowing read-level members to modify, delete, and publish project data. Attackers with explicit read-only access can delete reports and dashboards, schedule entire projects for deletion, publish private analytics to public share links, and modify alerting rules by exploiting missing access level validation in mutation resolvers.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2026-88891?


## How do I fix CVE-2026-88891?

No fix has been published for CVE-2026-88891 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-88891 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-88891 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-88891 and fix it if it is affected.

What it is: CVE-2026-88891 is a high-severity missing authorization vulnerability in Openpanel-dev openpanel, published on 10 Sep 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-2026-88891 exists.

Affected product: Openpanel-dev openpanel. 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-2026-88891/ (Markdown: https://insights.sbomify.com/CVE-2026-88891/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-88891
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-88891
- OSV: https://osv.dev/vulnerability/CVE-2026-88891

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-88891/
Summaries are generated and may contain mistakes; the official description above is the record.