CVE-2026-33483Public exploitNetwork attack vector

Service interruption via unlimited temporary file creation

Published Mar 23, 2026 · Updated Mar 23, 2026

Resource exhaustion in WWBN AVideo 26.0 and earlier allows remote attackers to fill temporary storage through unauthenticated POST requests. The aVideoEncoderChunk.json.php endpoint writes each request body to a persistent YTPChunk_ temporary file without authentication, size limits, rate limiting, or cleanup. Repeated network requests exhaust the host's temporary filesystem and can interrupt AVideo and other dependent services.

CVSS severity7.5
High
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in WWBN AVideo 26.0 and earlier allows remote attackers to fill temporary storage through unauthenticated POST requests. The aVideoEncoderChunk.json.php endpoint writes each request body to a persistent YTPChunk_ temporary file without authentication, size limits, rate limiting, or cleanup. Repeated network requests exhaust the host's temporary filesystem and can interrupt AVideo and other dependent services.

The record

CVE
CVE-2026-33483
Published
Mar 23, 2026
Updated
Mar 23, 2026
Vendor
World Wide Broadcast Network
Product
AVideo
Classifications
CWE-770, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 23, 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=<= 26.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

World Wide Broadcast Network · AVideoversion=<= 26.0

Published CVSS scores

7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

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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-770Allocation of Resources Without Limits or Throttling
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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