Out-of-bounds read in rclone - #VU147297
Published: September 7, 2026
Vulnerability identifier: #VU147297
CSH Severity: Medium
CVSS v4: 6.9 [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]
CVE-ID: N/A
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper bounds checking in backend/local\'s Object.openTranslatedLink function when handling a crafted Range request for a translated symlink object. A remote attacker can send a Range header with an excessively large starting offset to cause a denial of service.
The panic is recovered by Go\'s net/http implementation per connection, causing the affected request or connection to fail rather than terminating the entire server process.
Affected software
rclone
Remediation
Install security update from vendor's website.
rclone - update to 1.75.1