XSS in Aja Video Systems Helo Plus
CVE-2026-47096
AJA HELO Plus firmware before 2.1.7 contains a stored cross-site scripting vulnerability that allows unauthenticated attackers with network access to inject malicious JavaScript by setting an unsanitized eParamID_SystemName value through the /config?action=set web configuration API. Attackers can exploit this flaw when device authentication is disabled to persistently execute arbitrary script in the browser of any administrator who opens the web management interface, enabling theft of stored secrets such as web UI credentials, RTMP stream keys, publish URLs, and NFS/SMB share credentials, as well as hijacking of the authenticated session.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
Weakness classification (CWE)
References
- d26ddnfpy9hzf8.cloudfront.net/aja-web/public/pdf/2026/AJA_HELO_PLUS_ReleaseNote… (release-notes)
- www.aja.com/security-advisories/aja-sa-2026-003 (vendor-advisory)
- www.aja.com/support/item/10457 (product, patch)
- www.vulncheck.com/advisories/aja-helo-plus-stored-xss-via-system-name-parameter (third-party-advisory)
Frequently asked questions
- What is CVE-2026-47096?
- CVE-2026-47096 is a medium-severity vulnerability in Aja Video Systems Helo Plus, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-09-30.
- How severe is CVE-2026-47096?
- Medium severity. CVSS v3 base score is 6.1 out of 10.