CVE-2026-88013
rclone: http backend forwards custom/auth headers to a different host on redirect
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Low3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVDNVD · Analyzed | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.19% · top 92% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.7.
Weakness
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (opens in a new tab)All about CWE-200 and its CVEs
- CWE-319: Cleartext Transmission of Sensitive Information (opens in a new tab)All about CWE-319 and its CVEs
- CWE-522: Insufficiently Protected Credentials (opens in a new tab)All about CWE-522 and its CVEs
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/rclone/rcloneGHSA-486v-q2wf-fp2r (opens in a new tab)
References (5)
- https://github.com/rclone/rclone/security/advisories/GHSA-486v-q2wf-fp2r (opens in a new tab)x_refsource_CONFIRMexploit
- https://github.com/rclone/rclone/commit/22859b7e696cea3c563c6ba04c6b7f91f74456b4 (opens in a new tab)x_refsource_MISC
- https://github.com/rclone/rclone/commit/79fbc0842f74e02cb84f0e3e7261d169983c8831 (opens in a new tab)x_refsource_MISC
- https://github.com/rclone/rclone/commit/925fb4fb21eb25e75cd1b64fdd17ded857784bfc (opens in a new tab)x_refsource_MISC
- https://github.com/rclone/rclone/releases/tag/v1.75.1 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-486v-q2wf-fp2r (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-88013)Record last updated .