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Advisory record · GHSA-x756-g4x3-c64m

Cloudreve: Non-admin remote download users can SSRF loopback/internal services and read imported responses

CVSS 6.5 MediumEPSS 0.0040 · 34th percentile

Published by the GitHub Advisory Database at 20 Jul 2026, 21:16 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/cloudreve/Cloudreve/v4Go<4.0.0-20260606025411-aaebf317a78f4.0.0-20260606025411-aaebf317a78f
github.com/cloudreve/Cloudreve/v3Go<=3.0.0-20250225100611-da4e44b77af4No fixed version yet
Identifiers
GHSA-x756-g4x3-c64m · CVE-2026-54562 · GO-2026-6023
Weakness (CWE)
CWE-918
Tags
Published
20 Jul 2026
Updated
22 Jul 2026

Machine-written summary

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

Cloudreve v4 versions before 4.0.0-20260606025411-aaebf317a78f and v3 versions up to and including 3.0.0-20250225100611-da4e44b77af4 are affected. A non-admin authenticated user whose group has the remote download permission can submit URLs pointing to loopback, localhost, or IPv6 localhost (including redirects to these) so the server-side downloader fetches internal services, and then read the imported response in their own files. Upgrade the v4 package to 4.0.0-20260606025411-aaebf317a78f; no fixed version is listed for v3.

Written 6 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
6.5 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0040, the 34th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:58 UTC First seen by agentprime
  2. 31 Oct 2026, 14:58 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.