{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-56315: picklescan - Remote Code Execution via Unblocked Standard Library Modules","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-56315","status":"final","version":"1","initial_release_date":"2026-06-23T12:13:02.736Z","current_release_date":"2026-06-23T13:16:50.727Z","revision_history":[{"date":"2026-06-23T12:13:02.736Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"picklescan before 1.0.4 fails to block at least seven Python standard library modules (including uuid, _osx_support, _aix_support, _pyrepl.pager, and imaplib) exposing eight functions that provide direct arbitrary command execution. Attackers can craft malicious pickle files importing these unblocked modules to achieve remote code execution while bypassing picklescan's safety validation entirely.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-56315 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-56315"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-56315"},{"category":"external","summary":"GitHub Security Advisory (GHSA-g38g-8gr9-h9xp)","url":"https://github.com/mmaitre314/picklescan/security/advisories/GHSA-g38g-8gr9-h9xp"},{"category":"external","summary":"VulnCheck Advisory: picklescan - Remote Code Execution via Unblocked Standard Library Modules","url":"https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-unblocked-standard-library-modules"}]},"product_tree":{"branches":[{"category":"vendor","name":"picklescan","branches":[{"category":"product_name","name":"picklescan","branches":[{"category":"product_version_range","name":"<1.0.4","product":{"name":"picklescan picklescan <1.0.4","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:picklescan:picklescan:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"1.0.4","product":{"name":"picklescan picklescan 1.0.4","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:picklescan:picklescan:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-56315","title":"picklescan - Remote Code Execution via Unblocked Standard Library Modules","notes":[{"category":"description","text":"picklescan before 1.0.4 fails to block at least seven Python standard library modules (including uuid, _osx_support, _aix_support, _pyrepl.pager, and imaplib) exposing eight functions that provide direct arbitrary command execution. Attackers can craft malicious pickle files importing these unblocked modules to achieve remote code execution while bypassing picklescan's safety validation entirely.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"],"fixed":["CSAFPID-2"]},"scores":[{"cvss_v4":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","baseScore":9.3,"baseSeverity":"CRITICAL"},"products":["CSAFPID-1"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 1.0.4.","product_ids":["CSAFPID-1"]}]}]}