---
cve: "CVE-2026-79780"
severity: "MEDIUM"
cvss: 6.0
epss: "0.1%"
vendor: "rclone"
kev: false
exploited: false
published: "2026-08-25 16:17:29"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T01:33:40+02:00"
---

# CVE-2026-79780

> 6.0 MEDIUM · 🧪 PoC

## Beschreibung

rclone before v1.75.0 fails to sanitize IBM IAM bearer tokens and SSE-C encryption keys during S3 redirect callbacks, allowing credentials to be preserved across scheme or host changes. Attackers observing network traffic from a trusted endpoint can capture reusable IBM IAM tokens on same-host HTTPS-to-HTTP downgrades or SSE-C keys on cross-origin redirects to access protected S3 objects.

## CVSS-Vektor

```
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Benachbart | warn |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 9ee9d0a0cafd5e5fe3b271d2280b090ab6e64048 (Commit)

## Referenzen

- <https://github.com/rclone/rclone/security/advisories/GHSA-8mxv-9xhp-86h4>
- <https://www.vulncheck.com/advisories/rclone-before-credential-exposure-via-s3-redirect>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-79780) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_