CVE-2026-43880

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Source
https://cve.org/CVERecord?id=CVE-2026-43880
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43880.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-43880
Aliases
Published
2026-05-11T20:37:15.967Z
Modified
2026-07-08T08:13:29.998729428Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
WWBN AVideo: Unauthenticated Arbitrary Email Sending via sendEmail.json.php Allows Phishing from Site's Legitimate From Address
Details

WWBN AVideo is an open source video platform. In versions up to and including 29.0, objects/sendEmail.json.php exposes two branches depending on whether contactForm=1 is submitted. When the parameter is omitted, the endpoint sets $sendTo to an attacker-supplied email and, for unauthenticated callers, uses the site's own contact email as the message From:/Reply-To:. The endpoint is explicitly allow-listed as a "public write action" in objects/functionsSecurity.php (line 885), so it requires no authentication or CSRF token. An unauthenticated attacker (solving a captcha) can force the site's own SMTP infrastructure to send attacker-composed emails to arbitrary recipients with the site's legitimate sender address, passing SPF/DKIM/DMARC for the site's domain — ideal for targeted phishing and brand impersonation. Commit 4e3709895857a5857f0edb46b0ee984de0d9e1a2 contains an updated fix.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-940"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43880.json"
}
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
4e3709895857a5857f0edb46b0ee984de0d9e1a2
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "29.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "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-2026-43880.json"