{"id":"CLEANSTART-2026-XC26421","summary":"Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection","details":"Multiple security vulnerabilities affect the git-lfs package. Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. See references for individual vulnerability details.","modified":"2026-09-18T12:17:43.299212055Z","published":"2026-09-08T02:00:36.061682Z","withdrawn":"2026-09-18T11:59:01.768079Z","upstream":["CVE-2021-38561","CVE-2022-27191","CVE-2026-46600","CVE-2026-56855","CVE-2026-78662"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-XC26421.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2021-38561"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2022-27191"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-46600"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-56855"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-78662"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-38561"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-27191"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46600"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56855"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78662"}],"affected":[{"package":{"name":"git-lfs","ecosystem":"CleanStart"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1-r3"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-XC26421.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}