2025-10-30 23:29CVE-2025-48980hackerone
PUBLISHED5.2

In Brave Browser Desktop versions prior to 1.83.10 that have the split view feature enabled, the "Open Link in Split View" context menu item did not respect the SameSite cookie attribute. Therefore SameSite=Strict cookies would be sent on a cross-site navigation using this method.

Affected products

Brave

Desktop Browser

< 1.83.10 - AFFECTED

References

JSON source

Click to expand
{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2025-48980",
    "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
    "assignerShortName": "hackerone",
    "dateUpdated": "2025-10-31T14:48:00.254Z",
    "dateReserved": "2025-05-29T15:00:04.773Z",
    "datePublished": "2025-10-30T23:29:44.075Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
        "shortName": "hackerone",
        "dateUpdated": "2025-10-30T23:29:44.075Z"
      },
      "descriptions": [
        {
          "lang": "en",
          "value": "In Brave Browser Desktop versions prior to 1.83.10 that have the split view feature enabled, the \"Open Link in Split View\" context menu item did not respect the SameSite cookie attribute. Therefore SameSite=Strict cookies would be sent on a cross-site navigation using this method."
        }
      ],
      "affected": [
        {
          "vendor": "Brave",
          "product": "Desktop Browser",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1.83.10",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "1.83.10"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://hackerone.com/reports/3253725"
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "version": "3.0",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM"
          }
        }
      ]
    },
    "adp": [
      {
        "providerMetadata": {
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP",
          "dateUpdated": "2025-10-31T14:48:00.254Z"
        },
        "title": "CISA ADP Vulnrichment",
        "metrics": [
          {}
        ]
      }
    ]
  }
}

Mitre source

https://cveawg.mitre.org/api/cve/CVE-2025-48980