CVE-2026-79913Medium· 6.5▾ SunlitCloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, the ValidateExternalURL server-side request forgery guard in pkg/request/ssrf.go passes resolved addresses to checkIP without decoding NAT64, IPv4-compatible…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 35.8 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 24.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.4%
Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, the ValidateExternalURL server-side request forgery guard in pkg/request/ssrf.go passes resolved addresses to checkIP without decoding NAT64, IPv4-compatible, and 6to4 IPv4-in-IPv6 transition forms. An authenticated user with remote-download access can provide SrcUri through RemoteDownloadTask.createDownloadTask so a wrapper embedding a loopback, private, link-local, or cloud metadata IPv4 address is classified as public and fetched, exposing internal service responses and cloud instance credentials. IPv4-mapped IPv6 addresses remain blocked because Go converts that form with net.IP.To4. This issue is fixed in version 4.18.0.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
github.com/cloudreve/Cloudreve/v4 < 4.0.0-20260715072853-1c5cad6dec7ePatched in:
github.com/cloudreve/Cloudreve/v4 4.0.0-20260715072853-1c5cad6dec7eConnected by shared product, vendor, weakness, or advisory.
CVE-2026-77633High· 7.1Cloudreve is a self-hosted file management and sharing system
CVE-2026-77637Low· 3.8Cloudreve is a self-hosted file management and sharing system
CVE-2026-101056Medium· 5.3Cloudreve before 4.16.1 fails to revalidate share access when restoring cached navigator state from a context_hint UUID
CVE-2026-101048Medium· 5.4Cloudreve before 4.17.0 registers the administrative node test endpoints (POST /api/v4/admin/node/test and POST /api/v4/admin/node/test/downloader) without requiring the Admin.Write OAuth scope, unlike the node create/update/delete route…
CVE-2026-101051Low· 3.1Cloudreve before 4.16.1 fails to properly sanitize file paths returned by remote downloaders, allowing authenticated users to create files outside the selected destination directory
GHSA-v6w6-358x-2433Medium· 5.4Cloudreve Admin.Read OAuth tokens can trigger server-side node test requests