---
title: "CVE-2026-88891: OpenPanel - Broken Access Control"
description: "OpenPanel contains a broken access control caused by failure to enforce read-only project access on most mutating procedures, letting attackers with read-only access modify, delete, and publish project data, exploit requires explicit read-only access."
url: https://panop.io/threat-heartbeat/CVE-2026-88891/
---

# CVE-2026-88891 OpenPanel - Broken Access Control

OpenPanel contains a broken access control caused by failure to enforce read-only project access on most mutating procedures, letting attackers with read-only access modify, delete, and publish project data, exploit requires explicit read-only access.

CVSS base score 8.3 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.44% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-88891)

## Details

Type

Broken Access Control

Impact

Broken Access Control

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

Published

10 September 2026

Updated

15 October 2026

Weakness

[CWE-269](https://cwe.mitre.org/data/definitions/269.html)

## Vendor fix

Update to a version that enforces proper access control on all mutating procedures or latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-88891](https://nvd.nist.gov/vuln/detail/CVE-2026-88891)
- [https://www.vulncheck.com/advisories/openpanel-read-only-access-level-enforcement-bypass-via-mutations](https://www.vulncheck.com/advisories/openpanel-read-only-access-level-enforcement-bypass-via-mutations)
- [https://github.com/Openpanel-dev/openpanel/commit/5faad3226df8fe03bc9434dfd255afb3fcea4c83](https://github.com/Openpanel-dev/openpanel/commit/5faad3226df8fe03bc9434dfd255afb3fcea4c83)
- [https://github.com/Openpanel-dev/openpanel/security/advisories/GHSA-f9rx-pxgw-c6rg](https://github.com/Openpanel-dev/openpanel/security/advisories/GHSA-f9rx-pxgw-c6rg)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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