CVE-2026-55230 Vvveb - Stored XSS

Vvveb < 1.0.8.6 contains a stored XSS caused by improper HTML sanitization failing to strip event-handler attributes with > character in quoted values, letting low-privilege content authors execute JavaScript in visitors' and admins' browsers, exploit requires author or contributor role.

CVSS base score 8.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.32% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Stored XSS
Impact
Client Script Exec, Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Published
1 October 2026
Updated
15 October 2026
Weakness
CWE-79

Vendor fix

Update to version 1.0.8.6 or later.

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

← All CVEs