CVE-2026-33294Public exploitNetwork attack vector

Internal resource disclosure via unchecked thumbnail fetch

Published Mar 22, 2026 · Updated Mar 22, 2026

SSRF in World Wide Broadcast Network AVideo before 26.0 allows remote authenticated users to read internal HTTP resources via thumbnails. The BulkEmbed save endpoint passes each user-controlled thumbs URL to url_get_contents without isSSRFSafeURL validation, then stores the response as a video poster. Reachability requires BulkEmbed permission; only administrators receive it by default, but deployments can grant it to other authenticated users.

CVSS severity5.0
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in World Wide Broadcast Network AVideo before 26.0 allows remote authenticated users to read internal HTTP resources via thumbnails. The BulkEmbed save endpoint passes each user-controlled thumbs URL to url_get_contents without isSSRFSafeURL validation, then stores the response as a video poster. Reachability requires BulkEmbed permission; only administrators receive it by default, but deployments can grant it to other authenticated users.

The record

CVE
CVE-2026-33294
Published
Mar 22, 2026
Updated
Mar 22, 2026
Vendor
World Wide Broadcast Network
Product
AVideo
Classifications
CWE-918, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 22, 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

5.0GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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