# CVE-2026-126810: WWBN AVideo 29.1.0 through 29.7.1 Stored XSS via Channel RSS Feed

Status: published. Published: 2026-11-11. Updated: 2026-11-13.

WWBN AVideo 29.1.0 through 29.7.1 contains a stored cross-site scripting vulnerability that allows registered users to inject markup through the channel About field rendered in feed/index.php. Attackers can store an unquoted event-handler payload that bypasses feedHtmlDescription() filtering and executes via rss-style.xsl for any visitor, including administrators, viewing the channel feed.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/WWBN/AVideo/commit/069557e55f804346bf6ef4c0a5f1b44bfe1a0d9f

## Affected products and versions

- WWBN / AVideo (WWBN/AVideo): ≥ 29.1.0; ≤ 29.7.1 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 5.1 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 5.4 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N; source: CNA: VulnCheck

- CVSS 4.0: 5.1 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/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; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 5.4 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: 0.24% as of 2026-11-13; percentile 15.22%

- SSVC: exploitation poc; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-79

## Exploit evidence

- exploit: https://github.com/WWBN/AVideo/security/advisories/GHSA-2qxw-wm6h-5jr7 (ADP: CISA-ADP)

## References

- https://github.com/WWBN/AVideo/security/advisories/GHSA-2qxw-wm6h-5jr7 (CNA: VulnCheck; vendor-advisory)

- https://github.com/WWBN/AVideo/commit/069557e55f804346bf6ef4c0a5f1b44bfe1a0d9f (CNA: VulnCheck; patch)

- https://github.com/WWBN/AVideo/blob/v29.7.1/feed/index.php#L143-L169 (CNA: VulnCheck; technical-description)

- https://github.com/WWBN/AVideo/blob/v29.7.1/feed/rss-style.xsl#L32-L41 (CNA: VulnCheck; technical-description)

- https://www.vulncheck.com/advisories/wwbn-avideo-29.1.0-through-29.7.1-stored-xss-via-channel-rss-feed (CNA: VulnCheck; third-party-advisory)

- https://github.com/WWBN/AVideo/security/advisories/GHSA-2qxw-wm6h-5jr7 (ADP: CISA-ADP; exploit)

- https://github.com/WWBN/AVideo/blob/v29.7.1/feed/index.php#L143-L169 (disclosure@vulncheck.com)

- https://github.com/WWBN/AVideo/blob/v29.7.1/feed/rss-style.xsl#L32-L41 (disclosure@vulncheck.com)

- https://github.com/WWBN/AVideo/commit/069557e55f804346bf6ef4c0a5f1b44bfe1a0d9f (disclosure@vulncheck.com)

- https://github.com/WWBN/AVideo/security/advisories/GHSA-2qxw-wm6h-5jr7 (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/wwbn-avideo-29.1.0-through-29.7.1-stored-xss-via-channel-rss-feed (disclosure@vulncheck.com)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-126810; retrieved 2026-11-13; source updated 2026-11-13

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-126810; retrieved 2026-11-12; source updated 2026-11-11

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-126810; retrieved 2026-11-13; source updated Not reported

Revision: 2f43d77f27d114ca3963b32a6e72986ed461f03347710d09f0d3890b23de2142

Canonical: https://y2.dev/cve/CVE-2026-126810

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