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CVE-2026-8296

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.

Octopus Deploy Octopus Server是Octopus Deploy的服务器自动化部署工具。 Octopus Server存在安全漏洞，该漏洞源于在特定访问级别下可嵌入跨站脚本有效载荷。以下版本受到影响：2023.0.0版本至2025.4.10678之前版本、2026.1.0版本至2026.1.11451之前版本和2026.2.0版本至2026.2.13114之前版本。

AI Predicted 6.1 Difficulty: Moderate EPSS 0.32% · P22

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 3

VendorProduct Version RangeStatus
Octopus Deploy Octopus Server 2023.0.0< 2025.4.10678 affected
2026.1.0< 2026.1.11451 affected
2026.2.0< 2026.2.13114 affected
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I. Basic Information for CVE-2026-8296

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In affected versions of Octopus Server with certain access levels it was possible to embed a Cross-Site Scripting Payload via artifacts.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Octopus Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Octopus Deploy Octopus Server是Octopus Deploy的服务器自动化部署工具。 Octopus Server存在安全漏洞，该漏洞源于在特定访问级别下可嵌入跨站脚本有效载荷。以下版本受到影响：2023.0.0版本至2025.4.10678之前版本、2026.1.0版本至2026.1.11451之前版本和2026.2.0版本至2026.2.13114之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Octopus Deploy Octopus Server 2023.0.0 ~ 2025.4.10678 -

II. Public POCs for CVE-2026-8296

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III. Intelligence Information for CVE-2026-8296

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Vendor Advisories for CVE-2026-8296 (1)

IV. Related Vulnerabilities

Same product: Octopus Server
Same vendor: Octopus Deploy

V. Comments for CVE-2026-8296

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