Security advisory

{
  "id": "8f75d83b898ae54e8407c420f661962cb37064d0629aa0c2b13fc84b818b382f",
  "url": "https://osv.dev/vulnerability/CVE-2021-43266",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-43266",
    "summary": "In Mahara before 20.04.5, 20.10.3, 21.04.2, and 21.10.0, exporting collections via PDF export could lead to code execution via shell metacharacters in a collection name. Additional, in Mahara before 20.10.4, 21.04.3, and 21.10.1, exporting collections via PDF export could cause code execution",
    "evidence": "osv:CVE-2021-43266",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-43266",
      "aliases": [
        "CVE-2021-43266"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/maharaproject/mahara",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0ac1f94a973e467134edc7b94cb65318eb19227f"
                },
                {
                  "fixed": "84bc4a5c7030470a811a630b242066df098ec273"
                },
                {
                  "introduced": "baa466e351a72541cd7a28d6eb982a1fbc7a428c"
                },
                {
                  "fixed": "d294a69446e795dcbddf4e4929d597968bbdc4ef"
                },
                {
                  "fixed": "575cea51bb6c07acf0166da95e26595d03ead13f"
                },
                {
                  "introduced": "359597b32c7afe52339422a91f14256e17b33dfc"
                },
                {
                  "fixed": "0c3426bf91635a3e33c4cda993af52318e123d9a"
                },
                {
                  "fixed": "52109b30a7a9fa34ccd79bffe1ec42df3e9d3cc7"
                },
                {
                  "introduced": "9b0da78a1f8585b142a372d422bf5d9a36e1450d"
                },
                {
                  "fixed": "25ec8c4ffc820c2871ed1dc5a1b3008b8465edf3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mahara:mahara:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "20.04.0"
                      },
                      {
                        "fixed": "20.04.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:mahara:mahara:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "20.10.0"
                      },
                      {
                        "fixed": "20.10.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:mahara:mahara:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "20.10.0"
                      },
                      {
                        "fixed": "20.10.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:mahara:mahara:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "21.04.0"
                      },
                      {
                        "fixed": "21.04.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:mahara:mahara:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "21.04.0"
                      },
                      {
                        "fixed": "21.04.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:mahara:mahara:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "21.10.0"
                      },
                      {
                        "fixed": "21.10.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "21.10.0_RELEASE",
            "20.10.2_RELEASE",
            "20.04.4_RELEASE",
            "21.04.1_RELEASE",
            "20.10.1_RELEASE",
            "20.04.3_RELEASE",
            "21.04.0_RELEASE",
            "20.10.0_RELEASE",
            "20.04.2_RELEASE",
            "20.04.1_RELEASE",
            "20.04.0_RELEASE"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43266.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:27.661799967Z",
      "provider": "osv",
      "references": [
        "https://bugs.launchpad.net/mahara/+bug/1949527",
        "https://mahara.org/interaction/forum/topic.php?id=8952",
        "https://mahara.org/interaction/forum/topic.php?id=8995",
        "https://bugs.launchpad.net/mahara/+bug/1942903"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-43266",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 431883,
  "published_at": "2021-11-02T22:15:09.103+00:00"
}