CVE-2026-86722Public exploitNetwork attack vector

Email two-factor bypass via stale SQL cache

Published Sep 8, 2026 · Updated Sep 10, 2026

Improper authentication in WWBN AVideo allows remote authenticated users with a valid password to bypass email two-factor authentication. sqlDAL::readSql caches an empty new-device history query, while writeSql inserts the history row without invalidating that entry; getConfirmationCodeHash then reuses the stale result and send2FAEmail fails open. Exploitation requires LoginControl and email 2FA enabled and a previously unseen device, and it grants a full authenticated session without the confirmation code.

CVSS severity8.1
High
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

Improper authentication in WWBN AVideo allows remote authenticated users with a valid password to bypass email two-factor authentication. sqlDAL::readSql caches an empty new-device history query, while writeSql inserts the history row without invalidating that entry; getConfirmationCodeHash then reuses the stale result and send2FAEmail fails open. Exploitation requires LoginControl and email 2FA enabled and a previously unseen device, and it grants a full authenticated session without the confirmation code.

The record

CVE
CVE-2026-86722
Published
Sep 8, 2026
Updated
Sep 10, 2026
Vendor
WWBN
Product
AVideo
Classifications
CWE-287, CWE-636, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 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 <=c3edcc274c389816d434acadac07ee78eaf330c1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WWBN · AVideoversion=0 <=c3edcc274c389816d434acadac07ee78eaf330c1

Published CVSS scores

8.1GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:L/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.

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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-287Improper Authentication
CWE-636Not Failing Securely ('Failing Open')
T1078Valid Accounts

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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