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Vulnerability · Published Sep 10, 2026 · Assigned by GitHub_M

CVE-2026-88015rclone local: crafted Range request against a translated symlink panics (DoS)

Medium 5.3

In plain English

A medium-severity integer overflow in rclone from rclone. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.4%top 70.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.1, backend/local with --links or links=true exposes symlink targets as .rclonelink objects, and fs.RangeOption.Decode can pass an unchecked positive Range start through Object.Open and openTranslatedLink. The function slices the target string as linkdst[offset:], so a Range start larger than the target length causes a deterministic slice-bounds panic when lib/http/serve exposes the object through HTTP or WebDAV. Go net/http normally recovers the panic per connection, causing request-level denial of service rather than terminating the entire process. This issue is fixed in version 1.75.1.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12rcloneno fix listedDEBIAN-CVE-2026-88015
Debian:13rcloneno fix listedDEBIAN-CVE-2026-88015
Gogithub.com/rclone/rclone1.75.1GHSA-p6m2-r3w9-mpxw
Gogithub.com/rclone/rclone1.75.1GO-2026-6461
Ubuntu:26.10rcloneno fix listedUBUNTU-CVE-2026-88015

Affected products (as reported)

VendorProductVersions
rclone rclone < 1.75.1

Weakness: CWE-190, CWE-248 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References