{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-21879",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-08T18:34:32.575700Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-08T18:34:42.665Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/kanboard/kanboard/security/advisories/GHSA-mhv9-7m9w-7hcq"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "kanboard",
          "vendor": "kanboard",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.2.49"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Kanboard is project management software focused on Kanban methodology. Versions 1.2.48 and below are vulnerable to an Open Redirect attack that allows malicious actors to redirect authenticated users to attacker-controlled websites. By crafting URLs such as //evil.com, attackers can bypass the filter_var($url, FILTER_VALIDATE_URL) validation check. This vulnerability could be exploited to conduct phishing attacks, steal user credentials, or distribute malware. The issue is fixed in version 1.2.49."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-601",
              "description": "CWE-601: URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-08T00:51:50.954Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/kanboard/kanboard/security/advisories/GHSA-mhv9-7m9w-7hcq",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/kanboard/kanboard/security/advisories/GHSA-mhv9-7m9w-7hcq"
        },
        {
          "name": "https://github.com/kanboard/kanboard/commit/93bcae03301a6d34185a8dba977417e6b3de519f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kanboard/kanboard/commit/93bcae03301a6d34185a8dba977417e6b3de519f"
        },
        {
          "name": "https://github.com/kanboard/kanboard/releases/tag/v1.2.49",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kanboard/kanboard/releases/tag/v1.2.49"
        }
      ],
      "source": {
        "advisory": "GHSA-mhv9-7m9w-7hcq",
        "discovery": "UNKNOWN"
      },
      "title": "Kanboard vulnerable to Open Redirect via protocol-relative URLs"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-21879",
    "datePublished": "2026-01-08T00:51:50.954Z",
    "dateReserved": "2026-01-05T17:24:36.928Z",
    "dateUpdated": "2026-01-08T18:34:42.665Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-21879\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-08T18:34:32.575700Z\"}}}], \"references\": [{\"url\": \"https://github.com/kanboard/kanboard/security/advisories/GHSA-mhv9-7m9w-7hcq\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-08T18:34:24.332Z\"}}], \"cna\": {\"title\": \"Kanboard vulnerable to Open Redirect via protocol-relative URLs\", \"source\": {\"advisory\": \"GHSA-mhv9-7m9w-7hcq\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 4.7, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"LOW\"}}], \"affected\": [{\"vendor\": \"kanboard\", \"product\": \"kanboard\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 1.2.49\"}]}], \"references\": [{\"url\": \"https://github.com/kanboard/kanboard/security/advisories/GHSA-mhv9-7m9w-7hcq\", \"name\": \"https://github.com/kanboard/kanboard/security/advisories/GHSA-mhv9-7m9w-7hcq\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/kanboard/kanboard/commit/93bcae03301a6d34185a8dba977417e6b3de519f\", \"name\": \"https://github.com/kanboard/kanboard/commit/93bcae03301a6d34185a8dba977417e6b3de519f\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/kanboard/kanboard/releases/tag/v1.2.49\", \"name\": \"https://github.com/kanboard/kanboard/releases/tag/v1.2.49\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Kanboard is project management software focused on Kanban methodology. Versions 1.2.48 and below are vulnerable to an Open Redirect attack that allows malicious actors to redirect authenticated users to attacker-controlled websites. By crafting URLs such as //evil.com, attackers can bypass the filter_var($url, FILTER_VALIDATE_URL) validation check. This vulnerability could be exploited to conduct phishing attacks, steal user credentials, or distribute malware. The issue is fixed in version 1.2.49.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-601\", \"description\": \"CWE-601: URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-01-08T00:51:50.954Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-21879\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-08T18:34:42.665Z\", \"dateReserved\": \"2026-01-05T17:24:36.928Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-01-08T00:51:50.954Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}