{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "C-Blosc2"
              },
              {
                "fixed": "2.0.0.beta.5"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "e54acfbab77381f708b86e6a3e9748b8a4f8c3a2"
            },
            {
              "fixed": "c4c6470e88210afc95262c8b9fcc27e30ca043ee"
            }
          ],
          "repo": "https://github.com/blosc/c-blosc2",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "unresolved_ranges": [
      {
        "cpes": [
          "cpe:2.3:a:blosc:c-blosc2:2.0.0:alpha2:*:*:*:*:*:*",
          "cpe:2.3:a:blosc:c-blosc2:2.0.0:alpha3:*:*:*:*:*:*",
          "cpe:2.3:a:blosc:c-blosc2:2.0.0:alpha4:*:*:*:*:*:*",
          "cpe:2.3:a:blosc:c-blosc2:2.0.0:alpha5:*:*:*:*:*:*",
          "cpe:2.3:a:blosc:c-blosc2:2.0.0:beta1:*:*:*:*:*:*",
          "cpe:2.3:a:blosc:c-blosc2:2.0.0:beta2:*:*:*:*:*:*",
          "cpe:2.3:a:blosc:c-blosc2:2.0.0:beta3:*:*:*:*:*:*",
          "cpe:2.3:a:blosc:c-blosc2:2.0.0:beta4:*:*:*:*:*:*",
          "cpe:2.3:a:blosc:c-blosc2:2.0.0:beta5:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "2.0.0-alpha2"
          },
          {
            "last_affected": "2.0.0-alpha2"
          },
          {
            "introduced": "2.0.0-alpha3"
          },
          {
            "last_affected": "2.0.0-alpha3"
          },
          {
            "introduced": "2.0.0-alpha4"
          },
          {
            "last_affected": "2.0.0-alpha4"
          },
          {
            "introduced": "2.0.0-alpha5"
          },
          {
            "last_affected": "2.0.0-alpha5"
          },
          {
            "introduced": "2.0.0-beta1"
          },
          {
            "last_affected": "2.0.0-beta1"
          },
          {
            "introduced": "2.0.0-beta2"
          },
          {
            "last_affected": "2.0.0-beta2"
          },
          {
            "introduced": "2.0.0-beta3"
          },
          {
            "last_affected": "2.0.0-beta3"
          },
          {
            "introduced": "2.0.0-beta4"
          },
          {
            "last_affected": "2.0.0-beta4"
          },
          {
            "introduced": "2.0.0-beta5"
          },
          {
            "last_affected": "2.0.0-beta5"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "blosc:c-blosc2"
      }
    ]
  },
  "details": "blosc2.c in Blosc C-Blosc2 through 2.0.0.beta.5 has a heap-based buffer overflow when there is a lack of space to write compressed data.",
  "id": "CVE-2020-29367",
  "modified": "2026-07-08T05:36:16.234801407Z",
  "published": "2020-11-27T20:15:11.090Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26442"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Blosc/c-blosc2/commit/c4c6470e88210afc95262c8b9fcc27e30ca043ee"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}