Octopus
CVE-2025-0526
LOW
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization checks on every request
MITRE ATT&CK
1 technique across 1 tactic: Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 2.3 (LOW). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. EPSS exploitation probability: 0.08%. |
| Exploit ScenarioDerived | A remote attacker could access resources or perform actions without proper authorization checks by sending crafted requests to the affected application. |
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Alert meAnalysisAIv1 – Mar 28, 2026
In affected versions of Octopus Deploy it was possible to upload files to unexpected locations on the host using an API endpoint. Rated low severity (CVSS 2.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement role-based access control, validate authorization on every request server-side, apply principle of least privilege.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Missing Authorization (CWE-862), which allows attackers to access resources or perform actions without proper authorization checks. In affected versions of Octopus Deploy it was possible to upload files to unexpected locations on the host using an API endpoint. The field lacked validation which could potentially result in ways to circumvent expected workflows. Affected products include: Octopus Octopus Server.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
In affected versions of Octopus Deploy it was possible to upload files to unexpected locations on the host using an API endpoint. The field lacked validation which could potentially result in ways to circumvent expected workflows.
Executive ViewAI
CVE-2025-0526 is a low-severity vulnerability in affected involving missing authorization (CVSS 2.3). The limited severity suggests constrained impact, typically requiring specific conditions or local access for exploitation. Apply vendor updates when available as part of routine maintenance.
Apply vendor patch during routine maintenance. Standard security controls provide adequate interim protection.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Affected Products (CPE)CVE.org
In Octopus Deploy 2018.8.0 through 2018.9.x before 2018.9.1, an authenticated user with permission to modify deployment
A vulnerability was found in hongmaple octopus 1.0. Rated critical severity (CVSS 9.8), this vulnerability is remotely e
A vulnerability was found in hongmaple octopus 1.0. Rated critical severity (CVSS 9.8), this vulnerability is remotely e
In Octopus Deploy 2019.1.0 through 2019.3.1 and 2019.4.0 through 2019.4.5, an authenticated user with the VariableViewUn
In Octopus Deploy 2.0 and later before 2018.3.7, an authenticated user, with variable edit permissions, can scope some v
In affected versions of Octopus Server where access is managed by an external authentication provider, it was possible t
In affected versions of Octopus Deploy it is possible to bypass rate limiting on login using null bytes. Rated critical
In Halibut versions prior to 4.4.7 there is a deserialisation vulnerability that could allow remote code execution on sy
In Octopus Deploy 2018.4.4 through 2018.5.1, Octopus variables that are sourced from the target do not have sensitive va
Cross-site scripting (XSS) vulnerability in the All Variables tab in Octopus Deploy 3.4.0-3.13.6 (fixed in 3.13.7) allow
A vulnerability was found in hongmaple octopus 1.0. Rated medium severity (CVSS 5.4), this vulnerability is remotely exp
In Octopus Deploy 3.4.x before 2018.4.7, an authenticated user is able to view/update/save variable values within the Te
GitHub PoC
Exploit-DB