CVE-2025-34437Public exploitNetwork attack vector

Unauthorized comment-image upload via missing ownership check

Published Dec 17, 2025 · Updated Dec 17, 2025

IDOR in AVideo before 20.1 allows remote authenticated users to upload comment images into videos owned by other users. The view/mini-upload-form/imageUpload.json.php endpoint derives a target directory from videos_id and writes the file there without calling Video::canEdit(). Any authenticated account can therefore place image content in an arbitrary video's comment storage, but the documented impact is limited to this unauthorized write.

CVSS severity8.7
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

IDOR in AVideo before 20.1 allows remote authenticated users to upload comment images into videos owned by other users. The view/mini-upload-form/imageUpload.json.php endpoint derives a target directory from videos_id and writes the file there without calling Video::canEdit(). Any authenticated account can therefore place image content in an arbitrary video's comment storage, but the documented impact is limited to this unauthorized write.

The record

CVE
CVE-2025-34437
Published
Dec 17, 2025
Updated
Dec 17, 2025
Vendor
World Wide Broadcast Network
Product
AVideo
Classifications
CWE-639, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 17, 2025Record 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 <20.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

World Wide Broadcast Network · AVideoversion=0 <20.0

Published CVSS scores

5.3ChocapikkCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
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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