CVE-2026-55695

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Source
https://cve.org/CVERecord?id=CVE-2026-55695
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55695.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55695
Aliases
  • GHSA-56wm-3q3v-m93m
Published
2026-10-13T15:51:02Z
Modified
2026-10-28T02:30:30Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
FearlessCMS: Remote Code Execution via Unvalidated Update Repository URL in System Updater
Details

FearlessCMS is a flat-file content management system centered on simplicity and open source. In 0.1.2b and earlier, an authenticated administrator can set an arbitrary Git repository URL through admin/updater-handler.php and trigger perform_update, which passes the URL to update.sh. The updater clones the repository and replaces the live plugins/, admin/, and includes/ directories without verifying the repository's identity, signatures, or contents. Because router.php permits existing PHP files under plugins to be executed by the PHP development server, attacker-supplied update content can execute arbitrary PHP with the web server process's privileges and persist as a backdoor. This issue is fixed in version 0.1.3b.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-94"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55695.json"
}
References

Affected packages

Git / github.com/fearlessgeekmedia/fearlesscms

Affected ranges

Type
GIT
Repo
https://github.com/fearlessgeekmedia/fearlesscms
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a04281bac4b0a286df28723ed8291b1cd62f7447
Fixed
6dba91d496463e3940a2c917af3cae97b191de92
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "0.1.3b"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "6dba91d496463e3940a2c917af3cae97b191de92"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "0.1.3",
            "range": [
                {
                    "fixed": "a04281bac4b0a286df28723ed8291b1cd62f7447"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

0.*
0.0.1
0.0.2
0.0.2-1
0.0.2-11
0.0.2-12
0.0.2-13
0.0.2-14
0.0.2-16
0.0.2-2
0.0.2-3
0.0.2-5
0.0.2-6
0.0.2-7
0.0.2-8
0.0.2-9
0.0.3-1
0.0.3-10
0.0.3-2
0.0.3-3
0.0.3-4
0.0.3-5
0.0.3-6
0.0.3-7
0.0.3-8
0.0.3-9
0.1.0
0.1.1
0.1.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55695.json"