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Medium, CVSS 5.4amended

Cloudreve Admin.Read OAuth tokens can trigger server-side node test requests

CVE-2026-101048GHSA-v6w6-358x-2433

What to do

Partial vendor fix. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • Go github.com/cloudreve/Cloudreve/v3

    Affected
    <= 3.0.0-20250225100611-da4e44b77af4
    Fixed in
    no fixed version recorded

  • Go github.com/cloudreve/Cloudreve

    Affected
    every version
    Fixed in
    no fixed version recorded

  • Go github.com/cloudreve/Cloudreve/v4

    Affected
    < 4.0.0-20260626022735-332a9d800205
    Fixed in
    4.0.0-20260626022735-332a9d800205

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
5.4 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
EPSS
  • CVE-2026-101048: 0.24% estimated exploitation activity in the next 30 days; percentile 14.52 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Summary Cloudreve exposes two admin node test endpoints under the Admin.Read OAuth scope. These endpoints accept attacker-controlled node definitions and cause Cloudreve to make outbound server-side network requests. This allows an OAuth client authorized only for Admin.Read to trigger operational network actions that should require Admin.Write. Impact An attacker who obtains an admin-authorized OAuth token with Admin.Read but not Admin.Write can make the Cloudreve server connect to arbitrary URLs supplied in the request body. This can be used for blind SSRF, internal service probing, and triggering signed Cloudreve slave-style requests to attacker-chosen endpoints. Affected version Verified in source and runtime on latest master commit ba2e870bbd17f1918dd2321de861e453f696d6a3 and latest observed tag 4.16.1. Technical details The authenticated admin route group requires only Admin.Read: The following routes are registered without ScopeAdminWrite: By contrast, node create, update, and…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from ghsa record GHSA-v6w6-358x-2433

  2. Revision 1 · created ·

    Published from osv record GO-2026-6106

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2026-101048

Advisory: Cloudreve Admin.Read OAuth tokens can trigger server-side node test requests
IDs: CVE-2026-101048, GHSA-v6w6-358x-2433
Record: https://patchnext.com/advisories/cve-2026-101048 (revision 2, source checked 26 Oct 2026, 15:27 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.4)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Partial vendor fix; fixed versions by package: github.com/cloudreve/Cloudreve/v4 4.0.0-20260626022735-332a9d800205. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/cloudreve/Cloudreve/v3: affected <= 3.0.0-20250225100611-da4e44b77af4
- Go github.com/cloudreve/Cloudreve: affected every version
- Go github.com/cloudreve/Cloudreve/v4: affected < 4.0.0-20260626022735-332a9d800205; fixed in 4.0.0-20260626022735-332a9d800205

## Suggested inspection (read-only)
- Go github.com/cloudreve/Cloudreve/v3: check the installed version with your package manager.
- Go github.com/cloudreve/Cloudreve: check the installed version with your package manager.
- Go github.com/cloudreve/Cloudreve/v4: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/cloudreve/Cloudreve/v3, github.com/cloudreve/Cloudreve, github.com/cloudreve/Cloudreve/v4.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GO-2026-6106 (OSV record GO-2026-6106 lists affected ranges: Go github.com/cloudreve/Cloudreve >=0; Go github.com/cloudreve/Cloudreve/v3 >=0; Go github.com/cloudreve/Cloudreve/v4 >=0 <4.0.0-20260626022735-332a9d800205 (fixed))
- Verified: https://github.com/advisories/GHSA-v6w6-358x-2433 (GitHub-reviewed advisory GHSA-v6w6-358x-2433 lists affected ranges: Go github.com/cloudreve/Cloudreve/v4 >=0 =0 <=3.0.0-20250225100611-da4e44b77af4)

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