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CVE-2023-4390

Popup box < 3.7.2 - Admin+ Stored Cross-Site Scripting

MEDIUM
4.8
CVSS Score
Published: October 31, 2023 at 01:54 PM UTC
Updated: June 17, 2026 at 06:37 AM UTC
1 product affected across 1 vendorPopup box

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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

The Popup box WordPress plugin before 3.7.2 does not sanitize and escape some Popup fields, which could allow high-privilege users such as an administrator to inject arbitrary web scripts even when the unfiltered_html capability is disallowed (for example in a multisite setup).

Affected

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

Popup box· Ays Prowordpress-plugin
95%
v < 3.7.2
Affected range stops below 3.7.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitVDB EntryTechnical DescriptionThird Party Advisory
Source: [email protected]
https://wpscan.com/vulnerability/9fd2eb81-185d-4d42-8acf-925664b7cb2f

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

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

CVSS

4.8MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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