CVE-2026-8296 (GCVE-0-2026-8296)

Vulnerability from cvelistv5 – Published: 2026-06-19 09:23 – Updated: 2026-06-19 09:23
VLAI
Summary
In affected versions of Octopus Server with certain access levels it was possible to embed a Cross-Site Scripting Payload via artifacts.
Severity
5.6 (Medium)
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
CWE
  • Stored XSS using artifacts
Assigner
References
Impacted products
Vendor Product Version
Octopus Deploy Octopus Server Affected: 2023.0.0 , < 2025.4.10678 (custom)
Affected: 2026.1.0 , < 2026.1.11451 (custom)
Affected: 2026.2.0 , < 2026.2.13114 (custom)
Create a notification for this product.
Credits
This vulnerability was found by asotyc
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "platforms": [
            "Windows",
            "Linux"
          ],
          "product": "Octopus Server",
          "vendor": "Octopus Deploy",
          "versions": [
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              "status": "affected",
              "version": "2023.0.0",
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            },
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            },
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              "status": "affected",
              "version": "2026.2.0",
              "versionType": "custom"
            }
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      "credits": [
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          "type": "finder",
          "value": "This vulnerability was found by asotyc"
        }
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          "supportingMedia": [
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              "base64": false,
              "type": "text/html",
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            }
          ],
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "HIGH",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.6,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "HIGH",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "format": "CVSS",
          "scenarios": [
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              "description": "Stored XSS using artifacts",
              "lang": "en"
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      "providerMetadata": {
        "dateUpdated": "2026-06-19T09:23:28.395Z",
        "orgId": "6f4f8c89-ef06-4bae-a2a5-6734ddf76272",
        "shortName": "Octopus"
      },
      "references": [
        {
          "url": "https://advisories.octopus.com/post/2026/sa2026-05"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "x_generator": {
        "engine": "Vulnogram 1.0.2"
      }
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  },
  "cveMetadata": {
    "assignerOrgId": "6f4f8c89-ef06-4bae-a2a5-6734ddf76272",
    "assignerShortName": "Octopus",
    "cveId": "CVE-2026-8296",
    "datePublished": "2026-06-19T09:23:28.395Z",
    "dateReserved": "2026-05-11T09:44:07.992Z",
    "dateUpdated": "2026-06-19T09:23:28.395Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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