CVE-2026-33717Public exploitNetwork attack vector

Authenticated code execution via orphaned PHP upload

Published Mar 23, 2026 · Updated Mar 23, 2026

Unrestricted file upload in WWBN AVideo 26.0 and earlier allows remote authenticated users to execute PHP code via a crafted download URL. downloadVideoFromDownloadURL() preserves the URL basename when writing into videos/cache/tmpFile, and later resolution rejection terminates processing before the executable file is moved or removed. Standard upload permission and an attacker-hosted PHP file of at least 20 KB are required; successful access runs commands with the web server's privileges.

CVSS severity8.8
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in WWBN AVideo 26.0 and earlier allows remote authenticated users to execute PHP code via a crafted download URL. downloadVideoFromDownloadURL() preserves the URL basename when writing into videos/cache/tmpFile, and later resolution rejection terminates processing before the executable file is moved or removed. Standard upload permission and an attacker-hosted PHP file of at least 20 KB are required; successful access runs commands with the web server's privileges.

The record

CVE
CVE-2026-33717
Published
Mar 23, 2026
Updated
Mar 23, 2026
Vendor
World Wide Broadcast Network
Product
AVideo
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 26.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

World Wide Broadcast Network · AVideoversion=<= 26.0

Published CVSS scores

8.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Web Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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