Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| rclone | rclone | < 1.74.4 | 1.74.4 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | rclone | No fix yet | — |
| Debian 12 | rclone | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | rclone | No fix yet | — |
| Ubuntu 18.04 LTS | rclone | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | rclone | No fix yet | — |
| Ubuntu Pro 24.04 LTS | rclone | No fix yet | — |
| Ubuntu Pro 22.04 LTS | rclone | No fix yet | — |
| Ubuntu Pro 20.04 LTS | rclone | No fix yet | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | rclone | 1.75.1-1.amzn2023 | ALAS2023-2026-3129 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/rclone/rclone | < 1.74.4 | 1.74.4 | GHSA-gx4c-2hqx-cw2r |
Advisories 2
- ALAS2023-2026-3129 Important: rclone security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 28, 2026
- WID-SEC-2026-2266 rclone: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 25, 2026
References
- GitHub Security Advisory (GHSA-gx4c-2hqx-cw2r) vendor-advisory
- VulnCheck Advisory: rclone before 1.74.4 Security Token Disclosure via HTTPS to HTTP Redirect third-party-advisory