CVE-2026-40521

See a problem?
Please try reporting it to the source first.

Source

https://cve.org/CVERecord?id=CVE-2026-40521

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40521.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-40521

Published

2026-06-29T12:30:12.799Z

Modified

2026-07-16T03:48:30.762547418Z

Severity

8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

FrontAccounting < 2.4.20 Path Traversal RCE via attachment upload

Details

FrontAccounting before 2.4.20 contains a path traversal vulnerability in the attachment upload handler that allows authenticated attackers to execute arbitrary code by uploading files with traversal sequences in the unique_name parameter. Attackers can supply path traversal sequences ../../../shell.php to write files outside the intended attachments directory into the web root, and by uploading PHP files without extension validation, achieve remote code execution as the web server user.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40521.json",
    "cwe_ids": [
        "CWE-22"
    ],
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "fixed": "2.4.20"
                }
            ],
            "source": "AFFECTED_FIELD"
        },
        {
            "extracted_events": [
                {
                    "fixed": "2.4.20"
                }
            ],
            "source": "CPE_FIELD"
        },
        {
            "extracted_events": [
                {
                    "fixed": "2.4.20"
                }
            ],
            "source": "DESCRIPTION"
        }
    ],
    "cna_assigner": "VulnCheck"
}

References

Affected packages

Git / github.com/frontaccountingerp/fa

Affected ranges

Type

GIT

Repo

https://github.com/frontaccountingerp/fa

Events

Introduced

Fixed

701fea6848da4a02fb83d30f07a9c0473d6b7e33

Database specific

{
    "source": "REFERENCES"
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40521.json"