{"id":"CVE-2026-116188","aliases":["ALPINE-CVE-2026-116188","BIT-rclone-2026-116188","DEBIAN-CVE-2026-116188","EUVD-2026-109446","GHSA-6475-788v-w6c3","GHSA-qjw8-8hmp-c3m6","UBUNTU-CVE-2026-116188"],"status":"published","title":"rclone serve s3 1.75.0 before 1.75.2 Memory Limit Bypass via Multipart Overflow","description":"rclone serve s3 versions 1.75.0 before 1.75.2 contain an integer overflow vulnerability in multipart reorder-memory accounting that bypasses the configured buffer limit. Attackers can open two concurrent current-part PUT requests declaring huge lengths to wrap the signed int64 counter and retain out-of-order parts in memory, exhausting the host.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00253,"percentile":0.16975,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-190"],"published":"2026-10-25T13:20:24Z","modified":"2026-11-04T17:00:30Z","fixes":[{"ecosystem":"Alpine:v3.24","package":"rclone","fixed_in":["1.75.2-r0"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"rclone","fixed_in":["1.75.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.24","package":"rclone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.75.0"},{"fixed":"1.75.2-r0"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"rclone","ranges":[{"type":"SEMVER","events":[{"introduced":"1.75.0"},{"fixed":"1.75.2"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"rclone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.60.1+dfsg-2","1.60.1+dfsg-3","1.60.1+dfsg-4","1.65.0+dfsg-1","1.65.0+dfsg-2","1.69.3+dfsg-1","1.69.3+dfsg-2","1.69.3+dfsg-3","1.75.2-1","1.75.2-2"]},{"source":"osv","ecosystem":"Debian:13","package":"rclone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.60.1+dfsg-4","1.65.0+dfsg-1","1.65.0+dfsg-2","1.69.3+dfsg-1","1.69.3+dfsg-2","1.69.3+dfsg-3","1.75.2-1","1.75.2-2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"rclone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.36-3","1.36-3ubuntu0.1","1.36-3ubuntu0.2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"rclone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.47.0+ex1-6","1.47.0+ex1-7","1.49.5-2","1.49.5-3","1.50.2-2","1.50.2-2ubuntu0.1","1.50.2-2ubuntu0.2","1.50.2-2ubuntu0.2+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"rclone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.53.3-1","1.53.3-2","1.53.3-4","1.53.3-4ubuntu1","1.53.3-4ubuntu1.22.04.1","1.53.3-4ubuntu1.22.04.2","1.53.3-4ubuntu1.22.04.3","1.53.3-4ubuntu1.22.04.3+esm1","1.53.3-4ubuntu1.22.04.4","1.53.3-4ubuntu1.22.04.4+esm1","1.53.3-4ubuntu1.22.04.5","1.53.3-4ubuntu1.22.04.5+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"rclone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.60.1+dfsg-2build1","1.60.1+dfsg-3","1.60.1+dfsg-3ubuntu0.24.04.1","1.60.1+dfsg-3ubuntu0.24.04.2","1.60.1+dfsg-3ubuntu0.24.04.3","1.60.1+dfsg-3ubuntu0.24.04.4","1.60.1+dfsg-3ubuntu0.24.04.4+esm1","1.60.1+dfsg-3ubuntu0.24.04.5","1.60.1+dfsg-3ubuntu0.24.04.5+esm1","1.60.1+dfsg-3ubuntu0.24.04.6","1.60.1+dfsg-3ubuntu0.24.04.6+esm1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"rclone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.60.1+dfsg-4ubuntu3","1.69.3+dfsg-3","1.69.3+dfsg-3ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:26.04:LTS","package":"rclone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.60.1+dfsg-4ubuntu2","1.60.1+dfsg-4ubuntu3","1.60.1+dfsg-4ubuntu3.1","1.60.1+dfsg-4ubuntu3.1+esm1","1.60.1+dfsg-4ubuntu3.2","1.60.1+dfsg-4ubuntu3.2+esm1"]}],"products":[{"vendor":"rclone","product":"rclone"}],"references":[{"url":"https://github.com/rclone/rclone/security/advisories/GHSA-qjw8-8hmp-c3m6","tags":["vendor-advisory","exploit","Vendor Advisory","advisory","report"]},{"url":"https://www.vulncheck.com/advisories/rclone-serve-s3-1.75.0-before-1.75.2-memory-limit-bypass-via-multipart-overflow","tags":["third-party-advisory","Third Party Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116188","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-6475-788v-w6c3"},{"url":"https://security.alpinelinux.org/vuln/CVE-2026-116188","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/116xxx/CVE-2026-116188.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-116188","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-116188","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-116188","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-116188","title":"rclone serve s3 1.75.0 before 1.75.2 Memory Limit Bypass via Multipart Overflow","description":"rclone serve s3 versions 1.75.0 before 1.75.2 contain an integer overflow vulnerability in multipart reorder-memory accounting that bypasses the configured buffer limit. Attackers can open two concurrent current-part PUT requests declaring huge lengths to wrap the signed int64 counter and retain out-of-order parts in memory, exhausting the host.","status":"published","published":"2026-10-25T13:20:24.506Z","modified":"2026-11-04T17:00:30.945Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-190"],"updated_at":"2026-11-04T17:34:39.974757Z"}],"euvd":[{"id":"EUVD-2026-109446","description":"rclone serve s3 versions 1.75.0 before 1.75.2 contain an integer overflow vulnerability in multipart reorder-memory accounting that bypasses the configured buffer limit. Attackers can open two concurrent current-part PUT requests declaring huge lengths to wrap the signed int64 counter and retain out-of-order parts in memory, exhausting the host.","status":"published","published":"2026-10-25T13:20:24Z","modified":"2026-11-04T17:00:30Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-04T18:12:44.477339Z"}],"ghsa":[{"id":"GHSA-6475-788v-w6c3","title":"rclone serve s3 versions 1.75.0 before 1.75.2 contain an integer overflow vulnerability in...","description":"rclone serve s3 versions 1.75.0 before 1.75.2 contain an integer overflow vulnerability in multipart reorder-memory accounting that bypasses the configured buffer limit. Attackers can open two concurrent current-part PUT requests declaring huge lengths to wrap the signed int64 counter and retain out-of-order parts in memory, exhausting the host.","status":"published","published":"2026-10-25T15:32:20Z","modified":"2026-10-25T15:32:31Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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","level":"medium"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T15:14:22.728467Z"}],"nvd":[{"id":"CVE-2026-116188","description":"rclone serve s3 versions 1.75.0 before 1.75.2 contain an integer overflow vulnerability in multipart reorder-memory accounting that bypasses the configured buffer limit. 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Attackers can open two concurrent current-part PUT requests declaring huge lengths to wrap the signed int64 counter and retain out-of-order parts in memory, exhausting the host.","status":"published","published":"2026-10-25T14:16:58.973Z","modified":"2026-11-05T09:30:02.599524099Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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","level":"medium"}],"updated_at":"2026-11-05T13:31:49.170436Z"},{"id":"CVE-2026-116188","title":"rclone serve s3 1.75.0 before 1.75.2 Memory Limit Bypass via Multipart Overflow","description":"rclone serve s3 versions 1.75.0 before 1.75.2 contain an integer overflow vulnerability in multipart reorder-memory accounting that bypasses the configured buffer limit. Attackers can open two concurrent current-part PUT requests declaring huge lengths to wrap the signed int64 counter and retain out-of-order parts in memory, exhausting the host.","status":"published","published":"2026-10-25T13:20:24.506Z","modified":"2026-11-05T21:16:01.242345873Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-190"],"updated_at":"2026-11-05T22:01:21.792402Z"},{"id":"DEBIAN-CVE-2026-116188","description":"rclone serve s3 versions 1.75.0 before 1.75.2 contain an integer overflow vulnerability in multipart reorder-memory accounting that bypasses the configured buffer limit. Attackers can open two concurrent current-part PUT requests declaring huge lengths to wrap the signed int64 counter and retain out-of-order parts in memory, exhausting the host.","status":"published","published":"2026-10-25T14:16:58.973Z","modified":"2026-10-26T05:00:06.092607939Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:45:50.923612Z"},{"id":"UBUNTU-CVE-2026-116188","description":"rclone serve s3 versions 1.75.0 before 1.75.2 contain an integer overflow vulnerability in multipart reorder-memory accounting that bypasses the configured buffer limit. 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Attackers can open two concurrent current-part PUT requests declaring huge lengths to wrap the signed int64 counter and retain out-of-order parts in memory, exhausting the host.","status":"published","published":"2026-10-29T08:58:32.428Z","modified":"2026-10-30T10:45:02.931830728Z","updated_at":"2026-11-02T15:28:35.111822Z"}]}}