{"id":"DEBIAN-CVE-2026-7774","details":"tarfile.data_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() to write files outside the destination directory, subject to the permissions of the extracting process.","modified":"2026-08-27T23:06:22.962176324Z","published":"2026-06-04T16:16:42.103Z","upstream":["CVE-2026-7774"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-7774"}],"affected":[{"package":{"name":"pypy3","ecosystem":"Debian:13","purl":"pkg:deb/debian/pypy3?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.3.19+dfsg-2","7.3.20+dfsg-1","7.3.20+dfsg-2","7.3.20+dfsg-3","7.3.20+dfsg-4","7.3.21+dfsg-1","7.3.21+dfsg-2","7.3.21+dfsg-3","7.3.21+dfsg-4","7.3.22+dfsg-1","7.3.23+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-7774.json"}},{"package":{"name":"pypy3","ecosystem":"Debian:14","purl":"pkg:deb/debian/pypy3?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.3.19+dfsg-2","7.3.20+dfsg-1","7.3.20+dfsg-2","7.3.20+dfsg-3","7.3.20+dfsg-4","7.3.21+dfsg-1","7.3.21+dfsg-2","7.3.21+dfsg-3","7.3.21+dfsg-4","7.3.22+dfsg-1","7.3.23+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-7774.json"}},{"package":{"name":"python3.13","ecosystem":"Debian:13","purl":"pkg:deb/debian/python3.13?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.13.5-2+deb13u3"}]}],"versions":["3.13.5-2","3.13.5-2+deb13u1","3.13.5-2+deb13u2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-7774.json"}},{"package":{"name":"python3.13","ecosystem":"Debian:14","purl":"pkg:deb/debian/python3.13?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.13.14-1"}]}],"versions":["3.13.11-1","3.13.12-1","3.13.5-2","3.13.6-1","3.13.7-1","3.13.8-1","3.13.9-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-7774.json"}},{"package":{"name":"python3.14","ecosystem":"Debian:14","purl":"pkg:deb/debian/python3.14?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.14.6-1"}]}],"versions":["3.14.0-1","3.14.0-2","3.14.0-3","3.14.0-4","3.14.0-5","3.14.0~a7-1","3.14.0~b1-1","3.14.0~b2-1","3.14.0~b3-1","3.14.0~b4-1","3.14.0~rc1-1","3.14.0~rc2-1","3.14.0~rc3-1","3.14.2-1","3.14.3-1","3.14.3-2","3.14.3-3","3.14.3-4","3.14.3-5","3.14.4-1","3.14.4-2","3.14.5-1","3.14.5~rc1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-7774.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}