{"schemaVersion":3,"id":"CVE-2026-91986","aliases":["UBUNTU-CVE-2026-91986","DEBIAN-CVE-2026-91986","openSUSE-SU-2026:11857-1","openSUSE-SU-2026:21955-1","openSUSE-SU-2026:22126-1"],"status":"published","duplicateOf":null,"title":null,"description":"gitoxide gix-transport before 0.59.2 fails to filter control characters in git-daemon connect requests, allowing attackers to inject NUL/CR/LF bytes via crafted git URLs. Attackers can inject extra NUL-delimited protocol fields to spoof virtual hosts or inject newlines into daemon requests and logs.","dates":{"published":"2026-09-15T15:18:28.963Z","modified":"2026-09-21T19:22:09.322Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.4,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":5.3,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Ubuntu","score":5.3,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":5.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","exploitability":7.2,"impact":4.2,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Debian","score":5.3,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/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","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":5.3,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/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","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0023,"percentile":0.13009,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.026999999999999982,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.00203},"history":[{"date":"2026-09-16T00:00:00.000Z","score":0.00203,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00203,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00203,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00203,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00203,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00203,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00203,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00203,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.0023,"percentile":0.13009}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.00203,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00203,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00203,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0023,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.0023,"percentile":0.13009}]},"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-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')","description":"The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.","type":"weakness","status":"Incomplete","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/74.html"}],"affected":[{"vendor":"debian","product":"rust-gix-transport","name":"rust-gix-transport","label":"rust-gix-transport","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/rust-gix-transport","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-transport","name":"rust-gix-transport","label":"rust-gix-transport","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/rust-gix-transport","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":"< 0.59.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.59.2","eol":null,"hubHref":"/vendor/gitoxidelabs/gitoxide"},{"vendor":"opensuse","product":"gitoxide&distro=openSUSE Leap 16.0","name":"gitoxide","label":"gitoxide&distro=openSUSE Leap 16.0","ecosystem":"openSUSE","cpePart":null,"purl":"pkg:rpm/opensuse/gitoxide&distro=openSUSE Leap 16.0","purlType":"rpm","versions":[{"text":"< 0.56.0-bp160.2.1","noFixRecorded":false,"fixedIn":null},{"text":"< 0.60.0-bp160.1.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.56.0-bp160.2.1 | < 0.60.0-bp160.1.1","eol":null,"hubHref":null},{"vendor":"opensuse","product":"gitoxide&distro=openSUSE Tumbleweed","name":"gitoxide","label":"gitoxide&distro=openSUSE Tumbleweed","ecosystem":"openSUSE","cpePart":null,"purl":"pkg:rpm/opensuse/gitoxide&distro=openSUSE Tumbleweed","purlType":"rpm","versions":[{"text":"< 0.58.0-2.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.58.0-2.1","eol":null,"hubHref":null}],"affectedCount":5,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-rc7h-wp5f-w3g5","label":"github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-rc7h-wp5f-w3g5","hostname":"github.com","tags":["Vendor Advisory","REPORT"]},{"url":"https://www.vulncheck.com/advisories/gitoxide-gix-transport-before-0.59.2-cr-lf-nul-injection","label":"www.vulncheck.com/advisories/gitoxide-gix-transport-before-0.59.2-cr-lf-nul-injection","hostname":"www.vulncheck.com","tags":["Third Party Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-91986","label":"ubuntu.com/security/CVE-2026-91986","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-91986","label":"www.cve.org/CVERecord?id=CVE-2026-91986","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-91986","label":"security-tracker.debian.org/tracker/CVE-2026-91986","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-91986","label":"www.suse.com/security/cve/CVE-2026-91986","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://bugzilla.suse.com/1281749","label":"bugzilla.suse.com/1281749","hostname":"bugzilla.suse.com","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2026:11923-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:11923-1"]},"timeline":[{"kind":"published","date":"2026-09-15T15:18:28.963Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-21T19:22:09.322Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":22,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T04:28:05.748Z","stale":false,"partial":false}}