All vulnerabilities
CVE-2026-116196GHSA-gpw7-77cq-9f72

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

rclone rclone
Open in ThreatlineRecord JSON
CVSS
6.0Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed in1.75.2Fixed versionCVE List
Published25 Oct 2026Updated 25 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 2

  • rcloneaffected: all versions before 1.75.2CVE List
  • rcloneunaffected: 1.75.2CVE List

References 2