CVE-2026-116196Rclone before v1.75.2 B2 Credential Leak on Redirect via --b2-download-url

Description

Rclone before v1.75.2 contains a credential exposure vulnerability in the b2 backend that leaks the live account Authorization token and SSE-C keys on HTTP redirects from --b2-download-url hosts. Attackers can observe a same-host HTTPS-to-HTTP downgrade redirect to capture the cleartext B2 token, or receive cross-host redirects disclosing SSE-C customer encryption keys.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• GitHub Security Advisory (GHSA-gpw7-77cq-9f72) vendor-advisoryVendor Advisory
• VulnCheck Advisory: Rclone before v1.75.2 B2 Credential Leak on Redirect via --b2-download-url third-party-advisoryThird Party Advisory