rclone from 1.55.0 before 1.75.2 contains a signature verification bypass in stable selfupdate that trusts checksums from unsigned bytes preceding the PGP-clearsigned SHA256SUMS block. Attackers controlling the release distribution path can prepend an unsigned checksum line matching a malicious archive, causing selfupdate to install an attacker-controlled rclone executable.
Fix
Patch, vendor advisory and mitigation references on NVD 1
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 7
- Cpes+1 CPE criteria (now 1)NVD modified 2026-10-28 15:38
- StatusAwaiting Analysis → AnalyzedNVD modified 2026-10-28 15:38
- StatusPublished → Awaiting AnalysisNVD modified 2026-10-26 14:08
- StatusReceived → PublishedNVD modified 2026-10-25 13:20
- StatusPublished → ReceivedNVD modified 2026-10-25 14:16
- CVSS7.7 (v4.0, CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N) → 7.7 (v4.0, CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/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)NVD modified 2026-10-25 14:16
- First seenCVSS 7.7 · rcloneNVD modified 2026-10-25 13:20
Affected (CPE criteria) 1
cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:*