# CVE-2026-117341: CVE-2026-117341

Status: published. Published: 2026-10-27. Updated: 2026-11-04.

In affected versions of Octopus Server, creating a user invitation writes the invitation code to the audit event log. When the invitation is linked to a space, a user in that space with appropriate permissions could read the code from the audit event. Successfully exploiting this by redeeming the unclaimed invitation could allow the user to escalate privileges however this is dependant on the permissions assigned for the invited user.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Octopus Deploy / Octopus Server: ≥ 2019.0.0; < 2026.2.13438 (affected, custom); ≥ 2026.3.0; < 2026.3.15829 (affected, custom). Source: CNA: Octopus; platforms: Windows, Linux

## Severity and prioritization

- CVSS 4.0: 7.7 (high); 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; source: CNA: Octopus

- CISA KEV: No listing in collected sources

- EPSS: 0.23% as of 2026-11-04; percentile 13.38%

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-532

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://advisories.octopus.com/post/2026/sa2026-16 (CNA: Octopus)

## Provenance

- CNA: Octopus: https://www.cve.org/CVERecord?id=CVE-2026-117341; retrieved 2026-11-04; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-117341; retrieved 2026-11-04; source updated Not reported

Revision: 13ad62f285a460a7ace160c1574cb51c285668fe43191c51b57d16166b15c127

Canonical: https://y2.dev/cve/CVE-2026-117341

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