CVE-2026-33024Network attack vector

Unauthenticated blind SSRF via unchecked ffmpeg input

Published Mar 20, 2026 · Updated Mar 20, 2026

SSRF in WWBN AVideo Encoder before 8.0 allows remote attackers to reach internal services through public thumbnail endpoints. The getImage.php and getImageMP4.php handlers base64-decode the base64Url parameter and give the resulting HTTP(S) URL to ffmpeg after checking only its syntax, without rejecting private, loopback, or link-local destinations. Any network-accessible instance exposes blind requests without authentication; timing and error logs can disclose reachability, but response bodies are not returned directly.

CVSS severity9.3
Critical
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in WWBN AVideo Encoder before 8.0 allows remote attackers to reach internal services through public thumbnail endpoints. The getImage.php and getImageMP4.php handlers base64-decode the base64Url parameter and give the resulting HTTP(S) URL to ffmpeg after checking only its syntax, without rejecting private, loopback, or link-local destinations. Any network-accessible instance exposes blind requests without authentication; timing and error logs can disclose reachability, but response bodies are not returned directly.

The record

CVE
CVE-2026-33024
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
WWBN
Product
AVideo Encoder
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 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=< 8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WWBN · AVideo Encoderversion=< 8.0

Published CVSS scores

9.3GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
9.1NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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