Advisory record · GHSA-486v-q2wf-fp2r

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

CVSS 3.7 LowEPSS 0.0019 · 8th percentile

Published by the GitHub Advisory Database at 10 Sept 2026, 23:02 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/rclone/rcloneGo>=1.49.0, <1.75.11.75.1
Identifiers
GHSA-486v-q2wf-fp2r · BIT-rclone-2026-88013 · CVE-2026-88013 · GO-2026-6463
Weakness (CWE)
CWE-200 · CWE-319 · CWE-522
Published
10 Sept 2026
Updated
19 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The rclone http backend, versions 1.49.0 up to but not including 1.75.1, resends custom headers such as secret tokens or cookies to a different host when the server redirects the request. An attacker who controls or can influence a redirect from the configured server can capture those headers at the new destination, for example during a normal list, copy or download. Upgrade to rclone 1.75.1 or later.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
3.7 Low 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0019, the 8th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:13 UTC First seen by agentprime
  2. 31 Oct 2026, 14:13 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.