CVE-2026-84187Public exploitNetwork attack vectorHinoki check available

Broadcast cancellation via unguarded RTMP callback

Published Sep 1, 2026 · Updated Sep 1, 2026

Missing authentication in AVideo 29.0 and earlier allows remote attackers to cancel scheduled broadcasts through an RTMP callback. The on_publish.php handler omits Live::assertRtmpCallbackAllowed(), then passes a caller-supplied name to on_publish_denied(), where the PlayLists plugin parses the -ps- suffix as a schedule row ID and writes failed status. Any network host that can reach the endpoint can disrupt every scheduled broadcast without credentials, a valid stream key, or user interaction.

CVSS severity8.8
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing authentication in AVideo 29.0 and earlier allows remote attackers to cancel scheduled broadcasts through an RTMP callback. The on_publish.php handler omits Live::assertRtmpCallbackAllowed(), then passes a caller-supplied name to on_publish_denied(), where the PlayLists plugin parses the -ps- suffix as a schedule row ID and writes failed status. Any network host that can reach the endpoint can disrupt every scheduled broadcast without credentials, a valid stream key, or user interaction.

The record

CVE
CVE-2026-84187
Published
Sep 1, 2026
Updated
Sep 1, 2026
Vendor
WWBN
Product
AVideo
Classifications
CWE-306, CWE-284, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

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

8.2WWBN/AVideoCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
8.8VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
CWE-284Improper Access Control
T1499.004Application or System Exploitation

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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