CVE-2026-79782

EUVD-2026-65540
rclone before 1.74.4 fails to strip the X-Amz-Security-Token header when an S3 redirect changes scheme from HTTPS to HTTP on the same host. Attackers can intercept plaintext HTTP traffic to capture AWS STS session tokens sent in request headers.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
3.1 LOW
ADJACENT_NETWORK
HIGH
NONE
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 2.37%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
rclonerclone
𝑥
< 1.74.4
CNA
Debian logo
Debian Releases
Debian Product
Codename
rclone
bookworm
postponed
sid
vulnerable
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
rclone
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
rclone
Amazon Linux 2023
0:1.75.1-1.amzn2023
fixed
rclone-debuginfo
Amazon Linux 2023
0:1.75.1-1.amzn2023
fixed
rclone-debugsource
Amazon Linux 2023
0:1.75.1-1.amzn2023
fixed
Common Weakness Enumeration
References
https://github.com/rclone/rclone/security/advisories/GHSA-gx4c-2hqx-cw2r
https://www.vulncheck.com/advisories/rclone-before-security-token-disclosure-via-https-to-http-redirect