{"cve":"CVE-2026-56304","nvd":{"published":"2026-06-20T16:17:05.463","modified":"2026-06-24T19:17:13.550","status":"Modified","description":"picklescan before 1.0.1 contains an unsafe pickle deserialization vulnerability allowing unauthenticated attackers to create arbitrary zero-byte files via logging.FileHandler class instantiation. Attackers can exploit this by crafting malicious pickle payloads to bypass RCE blocklists and create lock files or other filesystem artifacts, potentially causing denial of service or application disruption.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","score":6.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","score":6.5},"cwes":["CWE-502"],"references":["https://github.com/mmaitre314/picklescan/security/advisories/GHSA-m7j5-r2p5-c39r","https://www.vulncheck.com/advisories/picklescan-arbitrary-file-creation-via-logging-filehandler-deserialization","https://github.com/mmaitre314/picklescan/security/advisories/GHSA-m7j5-r2p5-c39r"],"products":["mmaitre314:picklescan"],"source":"nvd","synced_at":"2026-10-19T22:39:28.638635428+00:00"},"epss":{"cve":"CVE-2026-56304","score":0.00443,"percentile":0.38494,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-m7j5-r2p5-c39r","url":"https://osv.dev/vulnerability/GHSA-m7j5-r2p5-c39r","summary":"picklescan vulnerable to arbitrary file create using logging.FileHandler","modified":"2026-07-21T15:00:40.986064261Z","packages":[{"ecosystem":"PyPI","name":"picklescan","purl":"pkg:pypi/picklescan","ranges":["<1.0.1"],"fixed":["1.0.1"]}]},{"id":"PYSEC-2026-225","url":"https://osv.dev/vulnerability/PYSEC-2026-225","summary":"","modified":"2026-06-26T00:00:06.017516511Z","packages":[{"ecosystem":"PyPI","name":"picklescan","purl":"pkg:pypi/picklescan","ranges":["<1.0.1"],"fixed":["1.0.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}