CVE-2026-8296
Octopus Server Artifact Cross-Site Scripting
Description
In affected versions of Octopus Server with certain access levels it was possible to embed a Cross-Site Scripting Payload via artifacts.
INFO
Published Date :
June 19, 2026, 10:16 a.m.
Last Modified :
June 22, 2026, 8:44 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | MEDIUM | 6f4f8c89-ef06-4bae-a2a5-6734ddf76272 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update Octopus Server to a non-vulnerable version.
- Review artifact handling for embedded scripts.
- Validate user inputs for script tags.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-8296.
| URL | Resource |
|---|---|
| https://advisories.octopus.com/post/2026/sa2026-05 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-8296 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-8296
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-8296 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-8296 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 22, 2026
Action Type Old Value New Value Added CWE CWE-79 Added SSVC {'id': 'CVE-2026-8296', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-22T15:10:19.347472Z'} -
New CVE Received by [email protected]
Jun. 19, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Octopus Deploy', 'product': 'Octopus Server', 'versions': [{'status': 'affected', 'version': '2023.0.0', 'lessThan': '2025.4.10678', 'versionType': 'custom'}, {'status': 'affected', 'version': '2026.1.0', 'lessThan': '2026.1.11451', 'versionType': 'custom'}, {'status': 'affected', 'version': '2026.2.0', 'lessThan': '2026.2.13114', 'versionType': 'custom'}], 'platforms': ['Windows', 'Linux'], 'defaultStatus': 'unaffected'}] Added Description In affected versions of Octopus Server with certain access levels it was possible to embed a Cross-Site Scripting Payload via artifacts. Added CVSS V4.0 AV:N/AC:H/AT:N/PR:H/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added Reference https://advisories.octopus.com/post/2026/sa2026-05