CVE-2026-116189

HIGH
MEDIUM Priority: 0.01 BB Relevance: 55/100
Published: 2026-10-25 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: Passive
AT: Present
VC: High
VI: High
VA: High

Description

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
rclone rclone 1.55.0 – 1.75.2
rclone rclone 1.55.0 < 1.75.2

Bug Bounty Relevance

55 / 100
✓ Network accessible
✓ No authentication

CVSS Score

7.7 / 10.0 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

EPSS — Exploitation Probability

0.14%
Raw Score 0.001420
Percentile 3.5%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00142
2026-10-28
0.00150

Intelligence Sources

mitre ref →
nvd ref →