{"schemaVersion":3,"id":"CVE-2026-100419","aliases":["UBUNTU-CVE-2026-100419","DEBIAN-CVE-2026-100419"],"status":"published","duplicateOf":null,"title":null,"description":"gitoxide gix-fs before 0.23.0 contains a path validation bypass vulnerability in the worktree checkout mechanism that allows attackers to escape the worktree directory via symlink manipulation. During forced checkout with overwrite_existing enabled, attackers can craft malicious repository trees where symlink entries replace validated directories, causing subsequent files to be written outside the worktree through the symlink for code execution or file manipulation.","dates":{"published":"2026-09-25T22:04:00.750Z","modified":"2026-09-28T13:06:21.364Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.3,"severity":"high","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":7.3,"severity":"high","vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7,"severity":"high","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Ubuntu","score":7.3,"severity":"high","vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":7,"severity":"high","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":2.6,"impact":9.8,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Debian","score":7.3,"severity":"high","vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/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","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":7.3,"severity":"high","vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/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","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7,"severity":"high","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00147,"percentile":0.03573,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-09-26T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00147,"percentile":0.03573}],"last30":[{"date":"2026-09-26T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00147,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00147,"percentile":0.03573}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-59","name":"Improper Link Resolution Before File Access ('Link Following')","description":"The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/59.html"}],"affected":[{"vendor":"debian","product":"rust-gix-fs","name":"rust-gix-fs","label":"rust-gix-fs","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/rust-gix-fs","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"rust-gix-fs","name":"rust-gix-fs","label":"rust-gix-fs","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/rust-gix-fs","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"gitoxidelabs","product":"gitoxide","name":"gitoxide","label":"gitoxide","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 0.23.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.23.0","eol":null,"hubHref":"/vendor/gitoxidelabs/gitoxide"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-6p9q-f2xg-6pr5","label":"github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-6p9q-f2xg-6pr5","hostname":"github.com","tags":["Vendor Advisory","REPORT"]},{"url":"https://github.com/GitoxideLabs/gitoxide/commit/b62498378b8bc2c95863a044b700f2063b0b5875","label":"github.com/GitoxideLabs/gitoxide/commit/b62498378b8bc2c95863a044b700f2063b0b5875","hostname":"github.com","tags":["Patch","REPORT"]},{"url":"https://github.com/GitoxideLabs/gitoxide/blob/gix-fs-v0.22.1/gix-fs/src/stack.rs#L185-L196","label":"github.com/GitoxideLabs/gitoxide/blob/gix-fs-v0.22.1/gix-fs/src/stack.rs","hostname":"github.com","tags":["Technical Description","REPORT"]},{"url":"https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-f89h-2fjh-2r9q","label":"github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-f89h-2fjh-2r9q","hostname":"github.com","tags":["Related","Vendor Advisory","REPORT"]},{"url":"https://github.com/GitoxideLabs/gitoxide","label":"github.com/GitoxideLabs/gitoxide","hostname":"github.com","tags":["Product","REPORT"]},{"url":"https://www.vulncheck.com/advisories/gitoxide-gix-fs-before-0.23.0-worktree-escape-via-symlink","label":"www.vulncheck.com/advisories/gitoxide-gix-fs-before-0.23.0-worktree-escape-via-symlink","hostname":"www.vulncheck.com","tags":["Third Party Advisory","REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-100419","label":"ubuntu.com/security/CVE-2026-100419","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-100419","label":"www.cve.org/CVERecord?id=CVE-2026-100419","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-100419","label":"security-tracker.debian.org/tracker/CVE-2026-100419","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CVE-2026-44471"]},"timeline":[{"kind":"published","date":"2026-09-25T22:04:00.750Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-28T13:06:21.364Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":29,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T19:14:24.976Z","stale":false,"partial":false}}