Security advisory

{
  "id": "8036ae9bdedc9c851b335fbd0f9e80123a06a0f537153390ccea356611fef67d",
  "url": "https://osv.dev/vulnerability/CVE-2026-48846",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-48846",
    "summary": "In Roundcube Webmail 1.6.x before 1.6.16 and 1.7.x before 1.7.1, the remote image blocking feature can be bypassed via a crafted CSS var() value in an e-mail message, which may lead to information disclosure or access-control bypass.",
    "evidence": "osv:CVE-2026-48846",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-48846",
      "aliases": [
        "CVE-2026-48846"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/roundcube/roundcubemail",
              "type": "GIT",
              "events": [
                {
                  "introduced": "993b888afe29c383bf45c84f17090f4db96367ba"
                },
                {
                  "fixed": "ea1798a6fbf060abcc0ba73b2435036bf8016a5a"
                },
                {
                  "introduced": "df9effa186f81d676962b941da4ebab5e05c3088"
                },
                {
                  "fixed": "d40ec266240f2456a52c24ef2848e18bbfb5c300"
                },
                {
                  "fixed": "59cca80908a61e662c5f81741449e9aeb91e8abe"
                },
                {
                  "fixed": "852350486b88b35b8544e8a630fad89e99e2150a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.6.0"
                      },
                      {
                        "fixed": "1.6.16"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "1.7.0"
                      },
                      {
                        "fixed": "1.7.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d40ec266240f2456a52c24ef2848e18bbfb5c300"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "1.7.1"
                  },
                  {
                    "range": [
                      {
                        "fixed": "59cca80908a61e662c5f81741449e9aeb91e8abe"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "ea1798a6fbf060abcc0ba73b2435036bf8016a5a"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "1.6.16"
                  },
                  {
                    "range": [
                      {
                        "fixed": "852350486b88b35b8544e8a630fad89e99e2150a"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.7.0",
            "1.6.15",
            "1.6.14",
            "1.6.13",
            "1.6.12",
            "1.6.11",
            "1.6.10",
            "1.6.9",
            "1.6.8",
            "1.6.7",
            "1.6.6",
            "1.6.5",
            "1.6.4",
            "1.6.3",
            "1.6.2",
            "1.6.1",
            "1.6.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48846.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.651732873Z",
      "provider": "osv",
      "references": [
        "https://github.com/roundcube/roundcubemail/releases/tag/1.6.16",
        "https://github.com/roundcube/roundcubemail/releases/tag/1.7.1",
        "https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48846.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-48846",
        "https://github.com/roundcube/roundcubemail/commit/59cca80908a61e662c5f81741449e9aeb91e8abe",
        "https://github.com/roundcube/roundcubemail/commit/852350486b88b35b8544e8a630fad89e99e2150a"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-669"
        ],
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48846.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-48846",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 517014,
  "published_at": "2026-05-25T19:21:09.656+00:00"
}