CVE-2026-86190Public exploitNetwork attack vector

Session hijacking via hash-branch user-record disclosure

Published Sep 5, 2026 · Updated Sep 8, 2026

Broken access control in WWBN AVideo 29.0 and earlier allows remote attackers to hijack viewer sessions through videoViewsInfo. The hash branch skips Video::canEdit, while video_statistic.php selects every user column and serializes password hashes, recovery tokens, personal data, and session identifiers. No account is required; a valid video hash exposes every recorded viewer, and replaying a disclosed session identifier grants that viewer's session, including administrator sessions.

CVSS severity9.8
Critical
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

Broken access control in WWBN AVideo 29.0 and earlier allows remote attackers to hijack viewer sessions through videoViewsInfo. The hash branch skips Video::canEdit, while video_statistic.php selects every user column and serializes password hashes, recovery tokens, personal data, and session identifiers. No account is required; a valid video hash exposes every recorded viewer, and replaying a disclosed session identifier grants that viewer's session, including administrator sessions.

The record

CVE
CVE-2026-86190
Published
Sep 5, 2026
Updated
Sep 8, 2026
Vendor
WWBN
Product
AVideo
Classifications
CWE-862, CWE-384, CWE-522, CWE-200, T1190, T1550.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 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 <=29.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WWBN · AVideoversion=0 <=29.0

Published CVSS scores

9.8WWBN/AVideo GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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-862Missing Authorization
CWE-384Session Fixation
CWE-522Insufficiently Protected Credentials
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1190Exploit Public-Facing Application
T1550.004Web Session Cookie

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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