TI-2026-26110 Aliases CVE-2026-33731 GHSA-95jh-7r58-xmxw

AVideo has an Authorize.Net Webhook Signature Bypass that Enables Wallet Balance Inflation via Forged Payment Data

MEDIUM 62CWE-345Published 2026-07-16 · Updated 2026-07-17

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · High · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-345.

Summary

WWBN AVideo is an open source video platform. In versions prior to 29.0, the Authorize.Net webhook handler at plugin/AuthorizeNet/webhook.php contains a signature verification bypass that allows an attacker to forge webhook requests with arbitrary payment amounts and target user IDs. By supplying a valid transaction ID from a small legitimate purchase, the attacker bypasses signature validation and credits arbitrary wallet balances to any user account via attacker-controlled payload fields. Three flaws combine into an exploit chain: signature bypass via OR logic (webhook.php:33), payload values override API-fetched values (AuthorizeNet.php:169-171, webhook.php:44-48) and a missing approval check (webhook.php:61-75). By forging payment metadata, an attacker can credit arbitrary amounts to any user's wallet without a corresponding payment and include a plans_id to activate premium subscriptions (webhook.php:86-134), enabling free access to all paid and premium content and causing direct revenue loss to the platform owner. This issue has been fixed in version 29.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00163 5th percentileScored 2026-11-07

Fix Fixed AVideo (WWBN): 29.0wwbn/avideo (Packagist): 29.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
WWBN	AVideo	before 29.0	29.0	Patch available	CNA
—	wwbn/avideo (Packagist)	before 29.0	29.0	Patch available	GHSA-95jh-7r58-xmxw

AVideo VendorWWBN Affected before 29.0 Fixed in 29.0 Patch available CNA
wwbn/avideo (Packagist) Vendor— Affected before 29.0 Fixed in 29.0 Patch available GHSA-95jh-7r58-xmxw

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:wwbn:avideo::::::::	—	—	WWBN

cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:* Versions — — ·WWBN

Remediation

Fix · CNA AVideo (WWBN) Fixed in 29.0
Fix · GHSA-95jh-7r58-xmxw wwbn/avideo (Packagist) Fixed in 29.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-33731
2026-10-03 Alias added: GHSA-95jh-7r58-xmxw

References

Other 3

TI-2026-82233 OS command injection in AVideo-Encoder via forged streamer login CVSS 3.1CRITICAL 10.0
TI-2026-82232 Unauthenticated PHP code injection in AVideo-Encoder installer CVSS 3.1CRITICAL 10.0
TI-2026-29567 Code injection in WWBN AVideo CVSS 3.1CRITICAL 10.0
TI-2026-26095 AVideo Allows Unauthenticated Live Stream Control via Token Verification URL Override in control.json.php CVSS 3.1CRITICAL 9.4
TI-2026-25874 Improper access control in WWBN AVideo CVSS 3.1CRITICAL 10.0
TI-2026-25758 AVideo has an Unauthenticated SQL Injection via `doNotShowCats` Parameter (Backslash Escape Bypass) CVSS 3.1CRITICAL 9.8

See all 364 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences