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CVE-2023-5809· NVD / CVE Program· CNA WPScan

Popup box < 3.8.6 - Admin+ Stored XSS in Categories

The Popup box WordPress plugin before 3.8.6 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

MediumCVSS 4.8 · v3.1—No exploit Fix available
Published
Dec 4, 2023
Updated
Jun 17, 2026
EPSS
0.5% · 37th percentile
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Action score

19

Monitor

Low priority for now.

CVSS
19 / 40 · 4.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Affected systems

VendorProduct
ays-propopup box

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • ays-pro popup boxbefore 3.8.6

Versions reported by the vendor

Affected version ranges reported by the assigning authority (WPScan). Independent of NVD's CPE analysis and usually ahead of it.

  • Unknown Popup box

    • before 3.8.6affected · semver

Same product

ays-pro: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-24460Popup Like box - Page Plugin < 3.5.3 - Authenticated Blind SQL Injections
    35Monitor
  • CVE-2021-24458Popup box < 2.3.4 - Authenticated Blind SQL Injections
    35Monitor
  • CVE-2023-27414WordPress Popup box Plugin <= 3.4.4 is vulnerable to Cross Site Scripting (XSS)
    24Monitor
  • CVE-2025-15611Popup Box AYS Pro < 5.5.0 - Admin+ Stored Cross-Site Scripting (XSS) via CSRF
    21Monitor
  • CVE-2024-9599Popup Box < 4.7.8 - Admin+ Stored XSS
    21Monitor
  • CVE-2023-6591Popup Box Pro < 20.9.0 - Admin+ Stored XSS
    19Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Unknown Popup box3.8.6Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2023-27414166 days apartWordPress Popup box Plugin <= 3.4.4 is vulnerable to Cross Site Scripting (XSS)
    24Monitor
  • CVE-2024-9599528 days apartPopup Box < 4.7.8 - Admin+ Stored XSS
    21Monitor
  • CVE-2023-58740 days apartPopup box < 3.8.6 - Admin+ Stored XSS in Popup Settings
    19Monitor
  • CVE-2023-534314 days apartPopup Box < 3.7.9 - Admin+ Stored XSS
    19Monitor
  • CVE-2023-439034 days apartPopup box < 3.7.2 - Admin+ Stored Cross-Site Scripting
    19Monitor
  • CVE-2023-659170 days apartPopup Box Pro < 20.9.0 - Admin+ Stored XSS
    19Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • Administrator privileges are required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

nvd-primary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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