CVE-2026-12887
MEDIUMCVSS 5.1/10EPSS 0.24%
Last modified
CVE-2026-12887 is a medium-severity vulnerability rated 5.1/10 on the CVSS scale. 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.. EPSS estimates a 0.24% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Octopus Deploy | Octopus Server | >= 2023.0.0, < 2026.1.674; >= 2026.1, < 2026.1.674; >= 2026.2, < 2026.2.973; >= 2026.3, < 2026.3.5839 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is 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 directory.
How severe is CVE-2026-12887?
CVE-2026-12887 has a CVSS score of 5.1/10 (MEDIUM severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.
How do I fix CVE-2026-12887?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-12887?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST