TI-2026-60039 Aliases CVE-2026-88013 GHSA-486v-q2wf-fp2r

rclone: http backend forwards custom/auth headers to a different host on redirect

MEDIUM 57CWE-200Published 2026-09-10 · Updated 2026-09-10

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · None · None
Fix status: Partial Red Hat: 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-200.

Summary

rclone is a command-line program to sync files and directories to and from different cloud storage providers. From 1.49.0 until 1.75.1, the HTTP backend attaches headers configured through --http-headers or headers= to requests in backend/http/http.go, while its fshttp.NewClient client follows redirects without a backend-specific http.Client.CheckRedirect policy. A configured remote that redirects to another host can therefore cause custom secrets such as X-Api-Key to be resent to that untrusted destination, and a same-host HTTPS-to-HTTP redirect can expose Authorization or Cookie headers in cleartext. Listing, stat, download, mount, and serve operations can trigger the leak during normal use. This issue is fixed in version 1.75.1.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00187 8th percentileScored 2026-11-07

Fix Partial rclone (rclone): 1.75.1github.com/rclone/rclone (Go): 1.75.1Red Hat: 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
rclone	rclone	1.49.0 to before 1.75.1	1.75.1	Patch available	CNA
—	github.com/rclone/rclone (Go)	1.49.0 to before 1.75.1	1.75.1	Patch available	GHSA-486v-q2wf-fp2r

rclone Vendorrclone Affected 1.49.0 to before 1.75.1 Fixed in 1.75.1 Patch available CNA
github.com/rclone/rclone (Go) Vendor— Affected 1.49.0 to before 1.75.1 Fixed in 1.75.1 Patch available GHSA-486v-q2wf-fp2r

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:rclone:rclone::::::::	1.49.0 to before 1.75.1	Vulnerable	rclone

cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:* Versions 1.49.0 to before 1.75.1 Vulnerable ·rclone

Remediation

Fix · CNA rclone (rclone) Fixed in 1.75.1
Fix · GHSA-486v-q2wf-fp2r github.com/rclone/rclone (Go) Fixed in 1.75.1 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Product	Status	Plan or fix
Cryostat 4	Affected	No fix yet: Fix deferred
Red Hat Advanced Cluster Management for Kubernetes 2	Affected	No fix yet: Fix deferred

Timeline

2026-10-02 Threatist record created from CVE-2026-88013
2026-10-03 Alias added: GHSA-486v-q2wf-fp2r

References

Patch 3

Advisory 2

Other 2

TI-2026-60044 rclone serve s3: --auth-proxy without --auth-key authenticates nobody - full SigV4 signature bypass CVSS 3.1CRITICAL 9.8
TI-2026-29802 RClone: Unauthenticated operations/fsinfo allows attacker-controlled backend instantiation and local command execution CVSS 4.0CRITICAL 9.2
TI-2026-29799 Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution CVSS 4.0CRITICAL 9.2
TI-2026-42602 Path traversal in rclone CVSS 3.1HIGH 8.8
TI-2026-39407 rclone: Unvalidated symlink target in local `--links` — arbitrary file write from an untrusted remote CVSS 3.1HIGH 8.8
TI-2026-80211 Authentication bypass in rclone serve webdav via OPTIONS requests CVSS 4.0MEDIUM 6.9

See all 23 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences