---
title: "CVE-2026-117341: Octopus Server - Broken Access Control"
description: "Octopus Server contains a broken access control vulnerability caused by invitation codes being written to audit event logs accessible by users with permissions in linked spaces, letting users escalate privileges by redeeming unclaimed invitations, exploit requires user with appropriate permissions in the space."
url: https://panop.io/threat-heartbeat/CVE-2026-117341/
---

# CVE-2026-117341 Octopus Server - Broken Access Control

Octopus Server contains a broken access control vulnerability caused by invitation codes being written to audit event logs accessible by users with permissions in linked spaces, letting users escalate privileges by redeeming unclaimed invitations, exploit requires user with appropriate permissions in the space.

CVSS base score 7.7 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.23% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-117341)

## Details

Type

Broken Access Control

Impact

Privilege Escalation

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Published

27 October 2026

Updated

29 October 2026

Weakness

[CWE-532](https://cwe.mitre.org/data/definitions/532.html)

## Vendor fix

Update to the latest version of Octopus Server where this issue is fixed.

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-2026-117341](https://nvd.nist.gov/vuln/detail/CVE-2026-117341)
- [https://advisories.octopus.com/post/2026/sa2026-16](https://advisories.octopus.com/post/2026/sa2026-16)

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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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