CVE-2026-84482Public exploitNetwork attack vectorHinoki check available

Administrative writes via fail-open origin comparison

Published Sep 1, 2026 · Updated Sep 2, 2026

Cross-site request forgery in WWBN AVideo through commit 9c39d8c8 allows remote attackers to perform administrative ObjectYPT writes. The get_domain() regex collapses sibling hosts to one parent and returns false for unparseable hosts, while isSameDomain() treats two false results as equal. Exploitation requires a privileged user to load attacker-controlled content from a qualifying origin, enabling live-server and related configuration changes.

CVSS severity8.7
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Cross-site request forgery in WWBN AVideo through commit 9c39d8c8 allows remote attackers to perform administrative ObjectYPT writes. The get_domain() regex collapses sibling hosts to one parent and returns false for unparseable hosts, while isSameDomain() treats two false results as equal. Exploitation requires a privileged user to load attacker-controlled content from a qualifying origin, enabling live-server and related configuration changes.

The record

CVE
CVE-2026-84482
Published
Sep 1, 2026
Updated
Sep 2, 2026
Vendor
WWBN
Product
AVideo
Classifications
CWE-940, CWE-352, CWE-346, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 2, 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=0 <=9c39d8c8b4c1f75540788d6b391740852ceb0732

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WWBN · AVideoversion=0 <=9c39d8c8b4c1f75540788d6b391740852ceb0732

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8WWBNCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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.

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 exploitPublished

Weakness, pattern, technique

CWE-940Improper Verification of Source of a Communication Channel
CWE-352Cross-Site Request Forgery (CSRF)
CWE-346Origin Validation Error
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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