{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.83.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8be4c8d5e6a79ccbaa74815027432a3c8c311385"
            },
            {
              "fixed": "4b3c13f3ae3f0d4a92ed790f47a03ffbfb9d92cc"
            }
          ],
          "repo": "https://github.com/activepieces/activepieces",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-hc39-cm5m-q8g7"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-79",
      "CWE-94"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73084.json"
  },
  "details": "Activepieces is an open source AI workflow automation platform. Prior to 0.83.0, the /api/redirect OAuth callback endpoint embeds the user-supplied code query parameter directly into an inline script block without proper escaping. A crafted request to /api/redirect with a malicious code value can break out of the script context and execute arbitrary JavaScript in the Activepieces origin when a logged-in user opens it. An unauthenticated attacker can access the victim's session tokens or make authenticated API calls on the victim's behalf. This issue is fixed in version 0.83.0.",
  "id": "CVE-2026-73084",
  "modified": "2026-08-14T03:51:58.136601141Z",
  "published": "2026-08-11T16:35:06.492Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/activepieces/activepieces/releases/tag/0.83.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73084.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/activepieces/activepieces/security/advisories/GHSA-hc39-cm5m-q8g7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73084"
    },
    {
      "type": "FIX",
      "url": "https://github.com/activepieces/activepieces/commit/8be4c8d5e6a79ccbaa74815027432a3c8c311385"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Activepieces: Reflected Cross-Site Scripting in OAuth Redirect Endpoint"
}