{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.3.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3c9769b12fb115768d43617635fd2e00737ef2f7"
            }
          ],
          "repo": "https://github.com/freedomofpress/securedrop-client",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-6qxc-pcfg-v6qv"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-601"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49996.json"
  },
  "details": "SecureDrop Client is a desktop app for journalists to securely communicate with sources and handle submissions on the SecureDrop Workstation. Prior to version 1.3.1, a malicious SecureDrop Server could bypass securedrop-proxy's origin limitation by responding with cross-origin redirects. SecureDrop Server itself has multiple layers of built-in hardening, and is a dedicated physical machine exposed on the internet only via Tor hidden services for the Source and Journalist interfaces, and optionally via remote SSH access over another Tor hidden service. A newsroom's SecureDrop Workstation communicates only with its own dedicated SecureDrop Server. Version 1.3.1 fixes the issue.",
  "id": "CVE-2026-49996",
  "modified": "2026-08-22T03:30:48.071506431Z",
  "published": "2026-08-20T18:55:57.513Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49996.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/freedomofpress/securedrop-client/security/advisories/GHSA-6qxc-pcfg-v6qv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49996"
    },
    {
      "type": "FIX",
      "url": "https://github.com/freedomofpress/securedrop-client/commit/3c9769b12fb115768d43617635fd2e00737ef2f7"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "securedrop-proxy origin limitation can be bypassed with redirects"
}