WWBN/AVideo stored XSS vulnerability leads to takeover of any user's account, including admin's account

published 2023-05-01 3 y ago modified 2026-06-17 4 mo ago also GHSA-xr9h-p2rc-rpqm , EUVD-2023-1654

cvss: 8.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits: 0; none known

WWBN AVideo is an open source video platform. In AVideo prior to version 12.4, a normal user can make a Meeting Schedule where the user can invite another user in that Meeting, but it does not properly sanitize the malicious characters when creating a Meeting Room. This allows attacker to insert malicious scripts. Since any USER including the ADMIN can see the meeting room that was created by the attacker this can lead to cookie hijacking and takeover of any accounts. Version 12.4 contains a patch for this issue.

Patch / fix

fixed in 2

packagist wwbn/avideo 12.4
wwbn avideo 12.4

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 21 mo ago (2025-01-29)

Exploit prediction

0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/WWBN/AVideo/security/advisories/GHSA-xr9h-p2rc-rpqm referenced PoC, tagged "exploit" by a source, unverified
youtu.be https://youtu.be/Nke0Bmv5F-o referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.0	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
GitHub	3.1	8.0	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
packagist	wwbn/avideo	<12.4	12.4

Affected products

WWBN AVideo

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /WWBN/AVideo/security/advisories/GHSA-xr9h-p2rc-rpqm
web, exploit, vendor-advisory
youtu.be /Nke0Bmv5F-o
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2023-30860
advisory
github.com /WWBN/AVideo
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary