Vulnerability · Published Sep 10, 2026 · Assigned by GitHub_M

CVE-2026-88014rclone archive/zip: Zip Slip via unsanitized zip entry names lets a malicious archive escape its own namespace

Medium 6.3

In plain English

A medium-severity path traversal in rclone from rclone. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.2%top 95.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

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. From 1.72.0 until 1.75.1, the archive ZIP backend method (*Fs).readZip in backend/archive/zip/zip.go accepts archive/zip.File.Name values from an untrusted central directory and exposes cleaned entry names without ensuring that they remain inside the archive namespace. Entries such as ../../etc/cron.d/evil can survive path.Clean and become Object.Remote() values that fs/sync and fs/operations use as destination-relative paths, allowing rclone copy or sync to write outside the selected destination on backends that do not independently confine the path. The non-empty root check also used strings.HasPrefix without a path boundary, so root foo could incorrectly include sibling foobar entries. This issue is fixed in version 1.75.1.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	rclone	no fix listed	DEBIAN-CVE-2026-88014
Debian:13	rclone	no fix listed	DEBIAN-CVE-2026-88014
Go	github.com/rclone/rclone	1.75.1	GHSA-66hp-wgxq-6f5q
Go	github.com/rclone/rclone	1.75.1	GO-2026-6464
Ubuntu:26.10	rclone	no fix listed	UBUNTU-CVE-2026-88014

Affected products (as reported)

Vendor	Product	Versions
rclone	rclone	>= 1.72.0, < 1.75.1

Weakness: CWE-22 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N

References

https://github.com/rclone/rclone/security/advisories/GHSA-66hp-wgxq-6f5q x_refsource_CONFIRM
https://github.com/rclone/rclone/commit/5dae3adbf571a6cd9ba501eb47397a7e871e1ae0 x_refsource_MISC
https://github.com/rclone/rclone/commit/6507e13d5a83789f500af96d7188c302c9d74d98 x_refsource_MISC
https://github.com/rclone/rclone/releases/tag/v1.75.1 x_refsource_MISC