TI-2026-69338 Aliases CVE-2026-102488 GHSA-w6j2-5q9c-xv6x

Octopus Server permission evaluation grants excess deployment rights

LOW 39CWE-863Published 2026-10-08 · Updated 2026-10-08

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.

Summary

Octopus Server from 2019.5.0 before 2026.2.12438 and from 2026.3.0 before 2026.3.15816 incorrectly evaluates multiple scoped permission assignments. A highly privileged user with low privileges can obtain deployment permissions beyond those granted to them, a flaw classified as CWE-863 (incorrect authorization). The attack requires no user interaction and affects confidentiality, integrity and availability of the server.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

In affected versions, Octopus Server incorrectly evaluates multiple scoped permission assignments, allowing a highly privileged user to obtain deployment permissions beyond those actually granted to them.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00207 10th percentileScored 2026-11-07

Fix Fixed Octopus Server (Octopus Deploy): 2026.2.12438, 2026.3.15816

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Octopus Deploy	Octopus Server	2019.5.0 to before 2026.2.12438; 2026.3.0 to before 2026.3.15816	2026.2.12438, 2026.3.15816	Patch available	CNA

Octopus Server VendorOctopus Deploy Affected 2019.5.0 to before 2026.2.12438; 2026.3.0 to before 2026.3.15816 Fixed in 2026.2.12438, 2026.3.15816 Patch available CNA

Remediation

Upgrade Octopus Server to 2026.2.12438 or 2026.3.15816, the versions that fix this flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Fix · CNA Octopus Server (Octopus Deploy) Fixed in 2026.2.12438, 2026.3.15816

Timeline

2026-10-08 Threatist record created from CVE-2026-102488
2026-10-08 Alias added: GHSA-w6j2-5q9c-xv6x
2026-10-08 CISA SSVC decision points changed
2026-10-08 Priority changed: MEDIUM → LOW

References

Other 1

https://advisories.octopus.com/post/2026/sa2026-12

TI-2018-13353 In Octopus Deploy 2018.8.0 through 2018.9.x before 2018.9.1, an authenticated user with… CVSS 3.0HIGH 8.8
TI-2022-02375 Improper authentication in Octopus Server CVSS 3.1CRITICAL 9.8
TI-2022-02579 Insufficient session expiration in Octopus Server CVSS 3.1CRITICAL 9.1
TI-2021-11816 Deserialization of untrusted data in Octopus Deploy Halibut CVSS 3.1CRITICAL 9.8
TI-2018-08066 In Octopus Deploy 2018.4.4 through 2018.5.1, Octopus variables that are sourced from the… CVSS 3.0CRITICAL 9.8
TI-2022-02575 In affected versions of Octopus Deploy it is possible to bypass rate limiting on login using null bytes. CVSS 3.1CRITICAL 9.8

See all 117 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences