{"id":"CVE-2026-109348","state":"PUBLISHED","title":"Gitoxide gix-mailmap before 0.35.0 CPU Denial of Service via .mailmap Parsing","description":"Gitoxide gix-mailmap before 0.35.0 contains a denial of service vulnerability that allows attackers to exhaust CPU through quadratic-time parsing in Snapshot::from_bytes. Attackers can commit a crafted .mailmap with descending-ordered entries forcing repeated front inserts, blocking workers running log, blame, or shortlog for minutes.","publishedAt":"2026-10-12T16:05:31.899Z","updatedAt":"2026-10-13T16:16:02.083Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["GitoxideLabs gix-mailmap"],"affected":[{"vendor":"GitoxideLabs","product":"gix-mailmap","packageName":"gix-mailmap","packageURL":"pkg:cargo/gix-mailmap","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.35.0","versionType":"semver"},{"version":"0.35.0","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-pmpw-wwcm-r8rc","https://www.vulncheck.com/advisories/gitoxide-gix-mailmap-before-0.35.0-cpu-denial-of-service-via-mailmap-parsing"],"weaknesses":["CWE-407"],"ingestedAt":"2026-10-29T20:10:33.477Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/109xxx/CVE-2026-109348.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-109348","state":"PUBLISHED","datePublished":"2026-10-12T16:05:31.899Z","dateUpdated":"2026-10-13T16:16:02.083Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-12T14:19:45.860Z"},"containers":{"cna":{"title":"Gitoxide gix-mailmap before 0.35.0 CPU Denial of Service via .mailmap Parsing","descriptions":[{"lang":"en","value":"Gitoxide gix-mailmap before 0.35.0 contains a denial of service vulnerability that allows attackers to exhaust CPU through quadratic-time parsing in Snapshot::from_bytes. Attackers can commit a crafted .mailmap with descending-ordered entries forcing repeated front inserts, blocking workers running log, blame, or shortlog for minutes."}],"affected":[{"vendor":"GitoxideLabs","product":"gix-mailmap","packageName":"gix-mailmap","packageURL":"pkg:cargo/gix-mailmap","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.35.0","versionType":"semver"},{"version":"0.35.0","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-pmpw-wwcm-r8rc","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-pmpw-wwcm-r8rc)"},{"url":"https://www.vulncheck.com/advisories/gitoxide-gix-mailmap-before-0.35.0-cpu-denial-of-service-via-mailmap-parsing","name":"VulnCheck Advisory: Gitoxide gix-mailmap before 0.35.0 CPU Denial of Service via .mailmap Parsing","tags":["third-party-advisory"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS"},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-407","lang":"en","description":"Inefficient Algorithmic Complexity","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-12T16:05:31.899Z"},"datePublic":"2026-09-25T00:00:00.000Z","credits":[{"lang":"en","value":"NotAFlightRisk","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-pmpw-wwcm-r8rc","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-13T16:14:32.633512Z","id":"CVE-2026-109348","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-13T16:16:02.083Z"}}]}}}