Security advisory

{
  "id": "f661128e917bdbc7eb400c5f1b86e3178699e7f7c8f9c01775b1be4fcb972835",
  "url": "https://osv.dev/vulnerability/CVE-2021-26917",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-26917",
    "summary": "PyBitmessage through 0.6.3.2 allows attackers to write screen captures to Potentially Unwanted Directories via a crafted apinotifypath value. NOTE: the discoverer states \"security mitigation may not be necessary as there is no evidence yet that these screen intercepts are actually transported away from the local host.\" NOTE: it is unclear whether there are any common use cases in which apinotifypath is controlled by an attacker",
    "evidence": "osv:CVE-2021-26917",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-26917",
      "aliases": [
        "CVE-2021-26917"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/bitmessage/pybitmessage",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "634a49cd6d8fc2f52504586be4c4766340641b25"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:bitmessage:pybitmessage:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.6.3.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.6.3.2",
            "0.6.3.1",
            "v0.6.3",
            "v0.6.2",
            "v0.6.0",
            "v0.3.5"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-26917.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:40.835788370Z",
      "provider": "osv",
      "references": [
        "https://attack.mitre.org/techniques/T1113/",
        "https://github.com/Bitmessage/PyBitmessage/releases",
        "https://github.com/Bitmessage/PyBitmessage/blob/f381721bec31641002e2f240309600c4994855a7/src/api.py#L35-L37",
        "https://poal.co/s/technology/290479"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-26917",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384489,
  "published_at": "2021-02-08T23:15:11.973+00:00"
}