Vulnerability · Published Oct 25, 2026 · Assigned by VulnCheck

CVE-2026-116190rclone v1.56.0 before v1.75.2 WebDAV Credential Header Leak on Redirect

Low 3.7

In plain English

A low-severity information exposure in rclone from rclone. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.7Low

Exploit odds (30 days)0.2%top 91.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

rclone from v1.56.0 before v1.75.2 contains an information disclosure vulnerability in the WebDAV backend that forwards operator-configured custom credential headers to different hosts on HTTP 3xx redirects. Attackers who control or influence a cross-host redirect can capture headers such as X-Auth-Token set via --webdav-headers and replay them against the original WebDAV service.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Alpine:v3.24	rclone	1.75.2-r0	ALPINE-CVE-2026-116190
Debian:12	rclone	no fix listed	DEBIAN-CVE-2026-116190
Debian:13	rclone	no fix listed	DEBIAN-CVE-2026-116190
Ubuntu:26.10	rclone	no fix listed	UBUNTU-CVE-2026-116190

Affected products (as reported)

Vendor	Product	Versions
rclone	rclone	1.56.0 – before 1.75.2

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

References

GitHub Security Advisory (GHSA-3rqf-7h69-gg5v) vendor-advisory
VulnCheck Advisory: rclone v1.56.0 before v1.75.2 WebDAV Credential Header Leak on Redirect third-party-advisory