CVE-2026-8296: Stored XSS using artifacts in Octopus Deploy Octopus Server
In affected versions of Octopus Server with certain access levels it was possible to embed a Cross-Site Scripting Payload via artifacts.
AI Analysis
Technical Summary
CVE-2026-8296 is a stored XSS vulnerability affecting Octopus Deploy Octopus Server versions 2023.0.0, 2026.1.0, and 2026.2.0. Attackers with appropriate access can inject malicious scripts through artifacts, potentially leading to script execution in the context of users viewing those artifacts. The vulnerability requires high attack complexity and privileges, with user interaction needed. No official fix or vendor advisory detailing remediation is currently available.
Potential Impact
Successful exploitation could allow an attacker with high privileges and user interaction to execute arbitrary scripts in the context of other users accessing the affected artifacts. This could lead to session hijacking, unauthorized actions, or data exposure within the Octopus Server environment. However, the attack complexity and required privileges limit the scope of impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to artifact management to trusted users only and exercise caution when handling artifacts from untrusted sources.
CVE-2026-8296: Stored XSS using artifacts in Octopus Deploy Octopus Server
Description
In affected versions of Octopus Server with certain access levels it was possible to embed a Cross-Site Scripting Payload via artifacts.
CVSS v4.0
Score 5.6medium
Affected software
pkg:github/octopusdeploy/octopusserverRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-8296 is a stored XSS vulnerability affecting Octopus Deploy Octopus Server versions 2023.0.0, 2026.1.0, and 2026.2.0. Attackers with appropriate access can inject malicious scripts through artifacts, potentially leading to script execution in the context of users viewing those artifacts. The vulnerability requires high attack complexity and privileges, with user interaction needed. No official fix or vendor advisory detailing remediation is currently available.
Potential Impact
Successful exploitation could allow an attacker with high privileges and user interaction to execute arbitrary scripts in the context of other users accessing the affected artifacts. This could lead to session hijacking, unauthorized actions, or data exposure within the Octopus Server environment. However, the attack complexity and required privileges limit the scope of impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to artifact management to trusted users only and exercise caution when handling artifacts from untrusted sources.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Octopus
- Date Reserved
- 2026-05-11T09:44:07.992Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3510cef198dc38c1f1cdbe
Added to database: 06/19/2026, 09:50:06 UTC
Last enriched: 06/26/2026, 13:12:56 UTC
Last updated: 08/02/2026, 19:18:00 UTC
Views: 98
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