Is there a public exploit for CVE-2026-116835?

No public exploit for CVE-2026-116835 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-116835?

CVE-2026-116835 scores CVSS 8.7 (v4.0), rated high.

What does CVE-2026-116835 affect?

CVE-2026-116835 affects Octopus Deploy Octopus Server.

8.7 High

In affected versions of Octopus Server, insufficient validation of custom claims on OIDC accounts allowed a user with permission to edit…

CVE-2026-116835

In affected versions of Octopus Server, insufficient validation of custom claims on OIDC accounts allowed a user with permission to edit accounts to cause Octopus Server to issue signed OIDC tokens that impersonate a different project. This could grant access to external systems, such as cloud providers or other Octopus instances, that trust that project's identity.

Assessment

CVSS: 8.7 (v4.0)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 12 November 2026
Last updated: 12 November 2026
Affected: Octopus Deploy · Octopus Server
Assigner: Octopus

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

https://advisories.octopus.com/post/2026/sa2026-22

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