CVE-2026-126806: XSS (CVSS 8.7)

Description

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.

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CVSS v3.1 Score

8.7

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

EPSS — Exploit Prediction

0.0036

Probability of exploitation

0.30%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

References

Other References

https://github.com/WWBN/AVideo/blob/v29.7.1/objects/functionTags.php#L198-L221 https://github.com/WWBN/AVideo/blob/v29.7.1/view/managerVideos_body.php#L1997-L2011 https://github.com/WWBN/AVideo/commit/da1da205608d57b1e695a7fad8288a2f5f9a0e0f https://github.com/WWBN/AVideo/security/advisories/GHSA-2qq6-qfcq-jmr9 https://www.vulncheck.com/advisories/wwbn-avideo-14.3-through-29.7.1-stored-xss-via-video-source-tag

Frequently Asked Questions

What is CVE-2026-126806? +

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. It has a CVSS v3.1 base score of 8.7 (HIGH).

How severe is CVE-2026-126806? +

CVE-2026-126806 has a CVSS v3.1 score of 8.7 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0036, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-126806? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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