CVE-2026-40909

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Source
https://cve.org/CVERecord?id=CVE-2026-40909
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40909.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-40909
Aliases
Published
2026-04-21T19:54:07.257Z
Modified
2026-07-15T01:48:50.531154049Z
Severity
  • 8.7 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N CVSS Calculator
Summary
WWBN AVideo has a Path Traversal in Locale Save Endpoint that Enables Arbitrary PHP File Write to Any Web-Accessible Directory (RCE)
Details

WWBN AVideo is an open source video platform. In versions 29.0 and prior, the locale save endpoint (locale/save.php) constructs a file path by directly concatenating $_POST['flag'] into the path at line 30 without any sanitization. The $_POST['code'] parameter is then written verbatim to that path via fwrite() at line 40. An admin attacker (or any user who can CSRF an admin, since no CSRF token is checked and cookies use SameSite=None) can traverse out of the locale/ directory and write arbitrary .php files to any writable location on the filesystem, achieving Remote Code Execution. Commit 57f89ffbc27d37c9d9dd727212334846e78ac21a fixes the issue.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40909.json",
    "cwe_ids": [
        "CWE-22"
    ]
}
References

Affected packages

Git / github.com/wwbn/avideo

Affected ranges

Type
GIT
Repo
https://github.com/wwbn/avideo
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
57f89ffbc27d37c9d9dd727212334846e78ac21a
Database specific 
{
    "cpe": "cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "29.0"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

10.*
10.8
Other
11
11.*
11.1
11.1.1
11.5
11.6
12.*
12.4
14.*
14.3
14.3.1
18.*
18.0
2.*
2.2
2.7
21.*
21.0
22.*
22.0
24.*
24.0
25.*
25.0
26.*
26.0
29.*
29.0
3.*
3.4
4.*
4.0
7.*
7.2
7.3
7.4
7.6
7.7
7.8
8.*
8.1
8.5
8.6
8.7
8.9
8.9.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40909.json"