Security advisory

{
  "id": "d7434c13c544a27d279d6905241fb399c32e3210efb9772a7e4ee4ca8d9880d4",
  "url": "https://osv.dev/vulnerability/CVE-2023-40890",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2023-40890",
    "summary": "A stack-based buffer overflow vulnerability exists in the lookup_sequence function of ZBar 0.23.90. Specially crafted QR codes may lead to information disclosure and/or arbitrary code execution. To trigger this vulnerability, an attacker can digitally input the malicious QR code, or prepare it to be physically scanned by the vulnerable scanner.",
    "evidence": "osv:CVE-2023-40890",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2023-40890",
      "aliases": [
        "CVE-2023-40890"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mchehab/zbar",
              "type": "GIT",
              "events": [
                {
                  "introduced": "24e9739746b6f5bf2bca15ccdb47210a76153a77"
                },
                {
                  "last_affected": "24e9739746b6f5bf2bca15ccdb47210a76153a77"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:zbar_project:zbar:0.23.90:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.23.90"
                      },
                      {
                        "last_affected": "0.23.90"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.23.90"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-40890.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:33.809434879Z",
      "provider": "osv",
      "references": [
        "https://hackmd.io/%40cspl/H1PxPAUnn",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DC7V5YCLCPB36J2KY6WLZCABFLBRB665/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/40xxx/CVE-2023-40890.json",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/25LZZQJGGZRPLKTRNRNOTAFQJIPS7WRP/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DC7V5YCLCPB36J2KY6WLZCABFLBRB665/",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-40890",
        "https://lists.debian.org/debian-lts-announce/2023/12/msg00001.html"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/40xxx/CVE-2023-40890.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-40890",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 501130,
  "published_at": "2023-08-29T00:00:00+00:00"
}