{"id":"CVE-2026-109351","state":"PUBLISHED","title":"Gitoxide gix-pack before 0.75.0 Denial of Service via Pack Header Object Count","description":"Gitoxide gix-pack before 0.75.0 contains an uncontrolled memory allocation vulnerability that allows remote attackers to abort the process by supplying a huge pack-header object count. Malicious remotes can serve a 12-byte pack header claiming 0xFFFFFFFF objects, forcing Tree::with_capacity to reserve hundreds of gigabytes and crash clone or fetch operations.","publishedAt":"2026-10-12T16:05:33.808Z","updatedAt":"2026-10-26T16:46:47.900Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["GitoxideLabs gix-pack"],"affected":[{"vendor":"GitoxideLabs","product":"gix-pack","packageName":"gix-pack","packageURL":"pkg:cargo/gix-pack","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.75.0","versionType":"semver"},{"version":"0.75.0","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-x862-c2wj-4mwr","https://www.vulncheck.com/advisories/gitoxide-gix-pack-before-0.75.0-denial-of-service-via-pack-header-object-count"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:10:33.477Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/109xxx/CVE-2026-109351.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-109351","state":"PUBLISHED","datePublished":"2026-10-12T16:05:33.808Z","dateUpdated":"2026-10-26T16:46:47.900Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-12T14:19:45.860Z"},"containers":{"cna":{"title":"Gitoxide gix-pack before 0.75.0 Denial of Service via Pack Header Object Count","descriptions":[{"lang":"en","value":"Gitoxide gix-pack before 0.75.0 contains an uncontrolled memory allocation vulnerability that allows remote attackers to abort the process by supplying a huge pack-header object count. Malicious remotes can serve a 12-byte pack header claiming 0xFFFFFFFF objects, forcing Tree::with_capacity to reserve hundreds of gigabytes and crash clone or fetch operations."}],"affected":[{"vendor":"GitoxideLabs","product":"gix-pack","packageName":"gix-pack","packageURL":"pkg:cargo/gix-pack","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.75.0","versionType":"semver"},{"version":"0.75.0","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-x862-c2wj-4mwr","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-x862-c2wj-4mwr)"},{"url":"https://www.vulncheck.com/advisories/gitoxide-gix-pack-before-0.75.0-denial-of-service-via-pack-header-object-count","name":"VulnCheck Advisory: Gitoxide gix-pack before 0.75.0 Denial of Service via Pack Header Object Count","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-12T16:05:33.808Z"},"datePublic":"2026-09-25T00:00:00.000Z","credits":[{"lang":"en","value":"manus-use","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-109351","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-26T16:35:35.581925Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-26T16:46:47.900Z"}}]}}}