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Vulnerability Details :

CVE-2026-43880

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-11 May, 2026 | 20:37
Updated At-12 May, 2026 | 12:55
Rejected At-
Credits

WWBN AVideo: Unauthenticated Arbitrary Email Sending via sendEmail.json.php Allows Phishing from Site's Legitimate From Address

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:11 May, 2026 | 20:37
Updated At:12 May, 2026 | 12:55
Rejected At:
▼CVE Numbering Authority (CNA)
WWBN AVideo: Unauthenticated Arbitrary Email Sending via sendEmail.json.php Allows Phishing from Site's Legitimate From Address

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.

Affected Products
Vendor
WWBN
Product
AVideo
Versions
Affected
  • <= 29.0
Problem Types
TypeCWE IDDescription
CWECWE-940CWE-940: Improper Verification of Source of a Communication Channel
Type: CWE
CWE ID: CWE-940
Description: CWE-940: Improper Verification of Source of a Communication Channel
Metrics
VersionBase scoreBase severityVector
3.15.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Version: 3.1
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/WWBN/AVideo/security/advisories/GHSA-5hgj-7gm9-cff5
x_refsource_CONFIRM
https://github.com/WWBN/AVideo/commit/4e3709895857a5857f0edb46b0ee984de0d9e1a2
x_refsource_MISC
Hyperlink: https://github.com/WWBN/AVideo/security/advisories/GHSA-5hgj-7gm9-cff5
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/WWBN/AVideo/commit/4e3709895857a5857f0edb46b0ee984de0d9e1a2
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/WWBN/AVideo/security/advisories/GHSA-5hgj-7gm9-cff5
exploit
Hyperlink: https://github.com/WWBN/AVideo/security/advisories/GHSA-5hgj-7gm9-cff5
Resource:
exploit
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:11 May, 2026 | 22:22
Updated At:12 May, 2026 | 14:50

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.15.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Type: Secondary
Version: 3.1
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-940Secondarysecurity-advisories@github.com
CWE ID: CWE-940
Type: Secondary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/WWBN/AVideo/commit/4e3709895857a5857f0edb46b0ee984de0d9e1a2security-advisories@github.com
N/A
https://github.com/WWBN/AVideo/security/advisories/GHSA-5hgj-7gm9-cff5security-advisories@github.com
N/A
https://github.com/WWBN/AVideo/security/advisories/GHSA-5hgj-7gm9-cff5134c704f-9b21-4f2e-91b3-4a467353bcc0
N/A
Hyperlink: https://github.com/WWBN/AVideo/commit/4e3709895857a5857f0edb46b0ee984de0d9e1a2
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/WWBN/AVideo/security/advisories/GHSA-5hgj-7gm9-cff5
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/WWBN/AVideo/security/advisories/GHSA-5hgj-7gm9-cff5
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource: N/A

Change History

0
Information is not available yet

Similar CVEs

6Records found

CVE-2026-35179
Matching Score-8
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Assigner-GitHub, Inc.
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Action-Not Available
Vendor-wwbnWWBN
Product-avideoAVideo
CWE ID-CWE-862
Missing Authorization
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Matching Score-8
Assigner-GitHub, Inc.
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Matching Score-8
Assigner-GitHub, Inc.
CVSS Score-5.3||MEDIUM
EPSS-0.03% / 8.81%
||
7 Day CHG~0.00%
Published-23 Mar, 2026 | 18:45
Updated-25 Mar, 2026 | 15:06
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
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AVideo vulnerable to IP Address Spoofing via Untrusted HTTP Headers in getRealIpAddr()

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `getRealIpAddr()` function in `objects/functions.php` trusts user-controlled HTTP headers to determine the client's IP address. An attacker can spoof their IP address by sending forged headers, bypassing any IP-based access controls or audit logging. Commit 1a1df6a9377e5cc67d1d0ac8ef571f7abbffbc6c contains a patch.

Action-Not Available
Vendor-wwbnWWBN
Product-avideoAVideo
CWE ID-CWE-348
Use of Less Trusted Source
CVE-2026-40935
Matching Score-8
Assigner-GitHub, Inc.
ShareView Details
Matching Score-8
Assigner-GitHub, Inc.
CVSS Score-5.3||MEDIUM
EPSS-0.06% / 19.87%
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7 Day CHG~0.00%
Published-21 Apr, 2026 | 22:21
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WWBN/AVideo has CAPTCHA Bypass via Attacker-Controlled Length Parameter and Missing Token Invalidation on Failure

WWBN AVideo is an open source video platform. In versions 29.0 and prior, `objects/getCaptcha.php` accepts the CAPTCHA length (`ql`) directly from the query string with no clamping or sanitization, letting any unauthenticated client force the server to generate a 1-character CAPTCHA word. Combined with a case-insensitive `strcasecmp` comparison over a ~33-character alphabet and the fact that failed validations do NOT consume the stored session token, an attacker can trivially brute-force the CAPTCHA on any endpoint that relies on `Captcha::validation()` (user registration, password recovery, contact form, etc.) in at most ~33 requests per session. Commit bf1c76989e6a9054be4f0eb009d68f0f2464b453 contains a fix.

Action-Not Available
Vendor-wwbnWWBN
Product-avideoAVideo
CWE ID-CWE-804
Guessable CAPTCHA
CVE-2023-50172
Matching Score-8
Assigner-Talos
ShareView Details
Matching Score-8
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CVSS Score-5.3||MEDIUM
EPSS-0.20% / 42.08%
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Published-10 Jan, 2024 | 15:48
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Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A recovery notification bypass vulnerability exists in the userRecoverPass.php captcha validation functionality of WWBN AVideo dev master commit 15fed957fb. A specially crafted HTTP request can lead to the silent creation of a recovery pass code for any user.

Action-Not Available
Vendor-wwbnWWBN
Product-avideoAVideo
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CVE-2026-41055
Matching Score-8
Assigner-GitHub, Inc.
ShareView Details
Matching Score-8
Assigner-GitHub, Inc.
CVSS Score-8.6||HIGH
EPSS-0.03% / 7.49%
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7 Day CHG~0.00%
Published-21 Apr, 2026 | 22:25
Updated-23 Apr, 2026 | 15:59
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
AVideo has an incomplete fix for CVE-2026-33039 (SSRF)

WWBN AVideo is an open source video platform. In versions 29.0 and below, an incomplete SSRF fix in AVideo's LiveLinks proxy adds `isSSRFSafeURL()` validation but leaves DNS TOCTOU vulnerabilities where DNS rebinding between validation and the actual HTTP request redirects traffic to internal endpoints. Commit 8d8fc0cadb425835b4861036d589abcea4d78ee8 contains an updated fix.

Action-Not Available
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Server-Side Request Forgery (SSRF)
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CVSS Score-3.5||LOW
EPSS-0.15% / 35.59%
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7 Day CHG~0.00%
Published-14 Jan, 2025 | 14:09
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Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
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Action-Not Available
Vendor-Fortinet, Inc.
Product-forticlientems_cloudforticlientemsFortiClientEMS
CWE ID-CWE-940
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Details not found