Medium severity · published Oct 27, 2026
CVE-2026-12887
In affected versions of Octopus Server, a user with permission to upload a malicious nuget package is able to deploy a script step so the script executes outside of the parent…
New
5.1
CVSS
–
EPSS
No
On KEV
Description
In affected versions of Octopus Server, a user with permission to upload a malicious nuget package is able to deploy a script step so the script executes outside of the parent directory.
Exploitation
Is it being used?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OS
Octopus Server · Octopus Deploy
2023.0.0 before 2026.1.674; 2026.1 before 2026.1.674; 2026.2 before 2026.2.973; 2026.3 before 2026.3.5839 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-12887
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-12887
advisories.octopus.com
https://advisories.octopus.com/post/2026/sa2026-14/
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