CVE-2026-41932

Vvveb < 1.0.8.3 Stored XSS via Signup Controller

MEDIUM
6.1
CVSS Score
Published: May 14, 2026 at 02:19 PM UTC
Updated: October 26, 2026 at 02:10 PM UTC
2 products affected across 2 vendorsVvvebVvveb

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

Vvveb before 1.0.8.3 contains a stored cross-site scripting vulnerability in the customer signup flow where the Signup::addUser() controller copies raw POST username values into the display_name field before sanitization occurs. Attackers can submit HTML and script markup in the username field during signup, which gets stripped from the username column but persisted verbatim in the display_name column, allowing stored XSS execution when display_name is rendered without encoding in vulnerable views.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.0.8.3
Affected range stops below 1.0.8.3, so it looks safe — our inference, not a vendor statement
v < 1.0.8.3
Affected range stops below 1.0.8.3, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in fefac290a8c85d3c87fe80ffed68b6c5bc50e93c (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79

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