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{
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              "content": {
                "id": "CVE-2026-123206",
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            "tags": [
              "exploit"
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            "url": "https://hackmd.io/@hieund/edgechat-files-unauthenticated-public-attachment-disclosure"
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        ],
        "title": "CISA ADP Vulnrichment"
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          "value": "EdgeChat before 2.20.3 contains a missing authentication vulnerability in the GET /files/:key route that allows unauthenticated or banned users to download decrypted public-channel attachments because canAccessFile() accepts a null user id. Attackers holding an attachment object key can omit or supply an invalid token to retrieve plaintext attachments without a session or channel membership."
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          "url": "https://github.com/aozorae/Edgechat/issues/58"
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          "url": "https://github.com/aozorae/Edgechat/blob/1288c66997d5e2f9eefc515cf60b2072f8d655be/worker/src/data/uploaded-files.js#L146"
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        },
        {
          "name": "VulnCheck Advisory: EdgeChat before 2.20.3 Missing Authentication for Attachment Download via GET /files/:key",
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          "url": "https://www.vulncheck.com/advisories/edgechat-before-2.20.3-missing-authentication-for-attachment-download-via-get-files-key"
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