CVE-2026-12887
Quick assessment
Affected
Octopus Deploy Octopus Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在受影响的 Octopus Server 版本中，拥有上传恶意 NuGet 包权限的用户可以部署一个脚本步骤，使该脚本在父目录之外执行。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-12887
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Octopus Deploy | Octopus Server | 2023.0.0 ~ 2026.1.674 | - |
|
II. Public POCs for CVE-2026-12887
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Same Patch Batch · Octopus Deploy · 2026-10-27 · 4 CVEs total
| CVE-2026-116870 | 8.7 HIGH | Octopus Server OIDC 令牌签发者验证不一致漏洞 |
| CVE-2026-117466 | 8.6 HIGH | Octopus Server 任意版本存在权限提升漏洞 |
| CVE-2026-117341 | 7.7 HIGH | Octopus Server 多版本审计日志泄露导致权限提升漏洞 |