CVE-2026-42634 Video Background Block - Reflected XSS

Video Background Block <= 2.0.3 contains a reflected XSS caused by improper input sanitization in the video background section, letting unauthenticated attackers execute scripts, exploit requires no authentication.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.25% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Reflected XSS
Impact
Client Script Exec
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Published
6 October 2026
Updated
15 October 2026
Weakness
CWE-79

Vendor fix

Update to a version later than 2.0.3.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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