CVE-2026-79913

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Source
https://cve.org/CVERecord?id=CVE-2026-79913
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-79913.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-79913
Aliases
Published
2026-09-22T15:24:33Z
Modified
2026-09-24T03:46:15Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Cloudreve: SSRF guard bypass: checkIP does not decode IPv6-transition wrappers (NAT64, IPv4-compatible, 6to4) reaching internal and cloud-metadata addresses
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-697",
        "CWE-918"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79913.json"
}
References

Affected packages

Git / github.com/cloudreve/cloudreve

Affected ranges

Type
GIT
Repo
https://github.com/cloudreve/cloudreve
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
1c5cad6dec7ec3037c6479e3a26a3909995d16a2
Fixed
0bb0ab833571d380153edd3529e01a7957b8b4ce
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "4.18.0"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

3.*
3.0.0
3.0.0-beta1
3.0.0-beta2
3.0.0-beta3
3.0.0-rc1
3.1.0
3.1.1
3.2.0
3.2.1
3.3.0
3.3.1
3.3.2
3.4.0
3.4.0-beta1
3.4.1
3.4.2
3.5.0
3.5.0-beta.3
3.5.0-beta1
3.5.0-beta2
3.5.1
3.5.2
3.5.3
3.6.0
3.6.0-beta1
3.6.1
3.6.2
3.7.0
3.7.1
3.8.0
3.8.0-beta1
3.8.1
3.8.2
3.8.3
4.*
4.0.0
4.0.0-beta.10
4.0.0-beta.11
4.0.0-beta.12
4.0.0-beta.13
4.0.0-beta.14
4.0.0-beta.6
4.0.0-beta.7
4.0.0-beta.8
4.0.0-beta.9
4.1.0
4.1.1
4.1.2
4.1.3
4.10.0
4.10.1
4.11.0
4.11.1
4.12.0
4.12.1
4.13.0
4.14.0
4.14.1
4.15.0
4.16.0
4.16.1
4.17.0
4.2.0
4.3.0
4.4.0
4.4.1
4.5.0
4.5.1
4.6.0
4.7.0
4.8.0
4.9.0
4.9.1
4.9.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-79913.json"