High severity · published Sep 29, 2026
CVE-2026-101169
In affected versions of Octopus Server, an authenticated user with permissions to edit an Environment or Project can set specifically crafted JSON content for the object
8.7
CVSS
0.3%
EPSS
No
On KEV
Description
In affected versions of Octopus Server, an authenticated user with permissions to edit an Environment or Project can set specifically crafted JSON content for the object. Insecure deserialization of this content allows the user to execute arbitrary code in the Octopus Server process.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OS
Octopus Server · Octopus Deploy
2019.4.1 before 2026.1.11781; 2026.2.0 before 2026.2.13441; 2026.3.0 before 2026.3.15829 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-101169
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-101169
advisories.octopus.com
https://advisories.octopus.com/post/2026/sa2026-10
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