CVE-2026-126806
WWBN AVideo 14.3 through 29.7.1 Stored XSS via Video Source Tag
WWBN AVideo 14.3 through 29.7.1 contains a stored cross-site scripting vulnerability that allows uploaders to inject scripts via the videoDownloadedLink value stored unescaped through objects/aVideoEncoder.json.php. Attackers can embed event-handler payloads in the URL host rendered as a Source tag in view/managerVideos_body.php, executing in administrator sessions to install plugin archives containing PHP.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| AVideo WWBN WWBN/AVideo
github |
≥ 14.3; ≤ 29.7.1 (affected, custom)
Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 9.3 critical |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N | CNA: VulnCheck |
| 3.1 / 8.7 high |
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N | CNA: VulnCheck |
| 4.0 / 9.3 critical |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 8.7 high |
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N | NVD: [email protected] |
Exploit evidence
- https://github.com/WWBN/AVideo/security/advisories/GHSA-2qq6-qfcq-jmr9
exploit · ADP: CISA-ADP
References
- https://github.com/WWBN/AVideo/security/advisories/GHSA-2qq6-qfcq-jmr9CNA: VulnCheck · vendor-advisory
- https://github.com/WWBN/AVideo/commit/da1da205608d57b1e695a7fad8288a2f5f9a0e0fCNA: VulnCheck · patch
- https://github.com/WWBN/AVideo/blob/v29.7.1/objects/functionTags.php#L198-L221CNA: VulnCheck · technical-description
- https://github.com/WWBN/AVideo/blob/v29.7.1/view/managerVideos_body.php#L1997-L2011CNA: VulnCheck · technical-description
- https://www.vulncheck.com/advisories/wwbn-avideo-14.3-through-29.7.1-stored-xss-via-video-source-tagCNA: VulnCheck · third-party-advisory
- https://github.com/WWBN/AVideo/security/advisories/GHSA-2qq6-qfcq-jmr9ADP: CISA-ADP · exploit
- https://github.com/WWBN/AVideo/blob/v29.7.1/objects/functionTags.php#L198-L221[email protected]
- https://github.com/WWBN/AVideo/blob/v29.7.1/view/managerVideos_body.php#L1997-L2011[email protected]
- https://github.com/WWBN/AVideo/commit/da1da205608d57b1e695a7fad8288a2f5f9a0e0f[email protected]
- https://github.com/WWBN/AVideo/security/advisories/GHSA-2qq6-qfcq-jmr9[email protected]
- https://www.vulncheck.com/advisories/wwbn-avideo-14.3-through-29.7.1-stored-xss-via-video-source-tag[email protected]
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