CVE-2026-33766Public exploitNetwork attack vector

Internal service access via unchecked redirects

Published Mar 27, 2026 · Updated Mar 27, 2026

SSRF in WWBN AVideo 26.0 and earlier allows context-dependent attackers to access internal services through a crafted image URL. The image-download endpoint checks only the initial downloadURL_image with isSSRFSafeURL(), while url_get_contents() and its wget fallback follow an HTTP redirect without validating the new destination. An authenticated user with upload-and-edit permission must trigger the download; affected fallback paths can access cloud metadata or internal services, while the cURL path does not follow redirects.

CVSS severity5.3
Medium
EPSS probability0.23%
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 26.0 and earlier allows context-dependent attackers to access internal services through a crafted image URL. The image-download endpoint checks only the initial downloadURL_image with isSSRFSafeURL(), while url_get_contents() and its wget fallback follow an HTTP redirect without validating the new destination. An authenticated user with upload-and-edit permission must trigger the download; affected fallback paths can access cloud metadata or internal services, while the cURL path does not follow redirects.

The record

CVE
CVE-2026-33766
Published
Mar 27, 2026
Updated
Mar 27, 2026
Vendor
World Wide Broadcast Network
Product
AVideo
Classifications
CWE-918, T1552.005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 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 privilegesunauthenticated

What is affected?

World Wide Broadcast Network · AVideoversion=<= 26.0

Published CVSS scores

5.3GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1552.005Unsecured Credentials: Cloud Instance Metadata API

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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