<Vulnerability name="CVE-2026-88013">
    <DocumentDistribution xml:lang="en">Copyright © 2012 Red Hat, Inc. All rights reserved.</DocumentDistribution>
    <ThreatSeverity>Low</ThreatSeverity>
    <PublicDate>2026-09-10T15:39:56</PublicDate>
    <Bugzilla id="2531530" url="https://bugzilla.redhat.com/show_bug.cgi?id=2531530" xml:lang="en:us">
github.com/rclone/rclone: rclone: Information disclosure via HTTP backend forwarding headers on redirect
    </Bugzilla>
    <CVSS3 status="draft">
        <CVSS3BaseScore>3.7</CVSS3BaseScore>
        <CVSS3ScoringVector>CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N</CVSS3ScoringVector>
    </CVSS3>
    <CWE>CWE-212</CWE>
    <Details xml:lang="en:us" source="Mitre">
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.
    </Details>
    <Details xml:lang="en:us" source="Red Hat">
A flaw was found in rclone. The HTTP backend in rclone can forward custom or authentication headers, such as API keys, Authorization, or Cookie headers, when following redirects to a different host. This can lead to the disclosure of sensitive information to untrusted destinations. Additionally, a redirect from HTTPS to HTTP on the same host can expose these headers in cleartext.
    </Details>
    <PackageState cpe="cpe:/a:redhat:cryostat:4">
        <ProductName>Cryostat 4</ProductName>
        <FixState>Fix deferred</FixState>
        <PackageName>cryostat/cryostat-storage-rhel9</PackageName>
    </PackageState>
    <PackageState cpe="cpe:/a:redhat:acm:2">
        <ProductName>Red Hat Advanced Cluster Management for Kubernetes 2</ProductName>
        <FixState>Fix deferred</FixState>
        <PackageName>rhacm2/volsync-rhel9</PackageName>
    </PackageState>
    <References xml:lang="en:us">
https://www.cve.org/CVERecord?id=CVE-2026-88013
https://nvd.nist.gov/vuln/detail/CVE-2026-88013
https://github.com/rclone/rclone/commit/22859b7e696cea3c563c6ba04c6b7f91f74456b4
https://github.com/rclone/rclone/commit/79fbc0842f74e02cb84f0e3e7261d169983c8831
https://github.com/rclone/rclone/commit/925fb4fb21eb25e75cd1b64fdd17ded857784bfc
https://github.com/rclone/rclone/releases/tag/v1.75.1
https://github.com/rclone/rclone/security/advisories/GHSA-486v-q2wf-fp2r
    </References>
</Vulnerability>