CVE-2026-48707

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Source
https://cve.org/CVERecord?id=CVE-2026-48707
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48707.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-48707
Aliases
  • GHSA-cm47-mwv3-f534
Published
2026-09-08T17:26:35Z
Modified
2026-09-12T11:30:30Z
Severity
  • 3.1 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
InstantCMS vulnerable to SSRF via upload redirect bypass allows internal network service scanning
Details

InstantCMS is a free and open source content management system. Versions prior to 2.18.2 have a Server-Side Request Forgery (SSRF) vulnerability in the file upload functionality (system/core/uploader.php at lines 509-532). When the "upload from URL" feature follows an HTTP redirect, the redirected target URL bypasses the private IP address blacklist check. This allows authenticated users to scan and access internal network services. Version 2.18.2 contains a fix.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48707.json"
}
References

Affected packages

Git / github.com/instantsoft/icms2

Affected ranges

Type
GIT
Repo
https://github.com/instantsoft/icms2
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
04b8fe0eb75fc5f44eecb15684c7d3660586683d
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.18.2"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

2.*
2.10.0
2.10.1
2.11.0
2.12.0
2.12.1
2.12.2
2.13.0
2.13.1
2.14.0
2.14.1
2.14.2
2.14.3
2.15.0
2.15.1
2.15.2
2.16.0
2.16.1
2.16.2
2.17.0
2.17.1
2.17.2
2.17.3
2.18.0
2.18.1
2.3.0
2.4.0
2.5.0
2.5.1
2.6.0
2.6.1
2.7.0
2.7.1
2.7.2
2.8.0
2.8.1
2.8.2
2.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48707.json"