{"dataType":"CVE_RECORD","dataVersion":"1.0","cveMetadata":{"cveId":"GCVE-110-OSM-2026-14111","assignerOrgId":"","assignerShortName":"Vulnetix","state":"PUBLISHED","datePublished":"2026-10-20T11:58:57Z","dateUpdated":"2026-10-24T03:52:31Z","dateReserved":""},"containers":{"cna":{"providerMetadata":null,"title":"","descriptions":[{"lang":"en","value":"Bug bounty dependency confusion attempt. Package exfiltrates basic system information (hostname, IP, DNS) to security research infrastructure. Behaviors: data exfiltration, code execution.\n\nENTRY\n  src/test_workalendar_internal/__main__.py (console-script: test-workalendar-internal=test_workalendar_internal.__main__:main)\n\nDESTINATION\n  - 3 exfil (custom-c2)\n  (values recorded in verified_iocs)\n\nEXFIL\n  - OAST/Interactsh Exfiltration in hatch_build.py: \"webhook.site\"\n  - Python File Upload to Remote in hatch_build.py: \"urllib.request.Request( webhook_url, data=\"\n  - Data Encoding for Exfiltration in hatch_build.py: \"json.dumps(result).encode\"\n  - Network Request in hatch_build.py: \"urllib.request.Request(\"\n\nADDITIONAL FINDINGS\n  - Shell Command Execution in hatch_build.py: \"subprocess.Popen(\"\n  - Silent Process Execution in hatch_build.py: \"stdout=subprocess.DEVNULL\"\n  - Brand New Package\n  - Rapid Version Publishing\n\nPAYLOAD FILES\n  hatch_build.py","supportingMedia":null}],"references":[{"url":"https://opensourcemalware.com/threats/c9f89af8-8ec2-4c70-ae13-86f2235a9459","name":"Malicious pypi package: test-workalendar-internal","tags":["advisory"]},{"url":"https://pypi.org/test-workalendar-internal","name":"","tags":["vendor"]}],"metrics":[{"format":"CVSS_V3","scenarios":null,"cvssV2_0":null,"cvssV3_0":null,"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","baseScore":5.4,"baseSeverity":"MEDIUM"},"cvssV4_0":null,"other":null}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Embedded Malicious Code","cweId":"CWE-506","type":"CWE"}]}],"affected":[{"vendor":"unknown","product":"test-workalendar-internal","collectionURL":"https://pypi.org","packageName":"test-workalendar-internal","repo":"","defaultStatus":"affected","versions":[{"version":"all","status":"affected","versionType":"","lessThan":"","lessThanOrEqual":"","changes":null}],"cpes":null,"modules":null,"programFiles":null,"platforms":null}],"cpeApplicability":null,"rejectedReasons":null,"replacedBy":null},"adp":null}}