CVE-2026-41061Public exploitNetwork attack vector

Stored XSS via unanchored duration validation

Published Apr 21, 2026 · Updated Apr 21, 2026

Stored XSS in AVideo 29.0 and earlier allows remote authenticated users to run JavaScript in viewers' browsers via a crafted duration. isValidDuration accepts trailing markup after a valid time prefix, and getCleanDuration returns it to unescaped duration sinks on listing pages. Upload-level permission and a viewer opening a page containing the poisoned video are required; script execution occurs in that viewer's session.

CVSS severity5.4
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in AVideo 29.0 and earlier allows remote authenticated users to run JavaScript in viewers' browsers via a crafted duration. isValidDuration accepts trailing markup after a valid time prefix, and getCleanDuration returns it to unescaped duration sinks on listing pages. Upload-level permission and a viewer opening a page containing the poisoned video are required; script execution occurs in that viewer's session.

The record

CVE
CVE-2026-41061
Published
Apr 21, 2026
Updated
Apr 21, 2026
Vendor
World Wide Broadcast Network
Product
AVideo
Classifications
CWE-79, T1539
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 29.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

World Wide Broadcast Network · AVideoversion=<= 29.0

Published CVSS scores

5.4GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1539Steal Web 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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