CVE-2023-5874Public exploitNetwork attack vector

Stored script execution via unescaped close-button settings

Published Dec 4, 2023 · Updated Nov 21, 2024

Stored XSS in AYS Pro Plugins Popup Box before 3.8.6 allows remote authenticated users to inject scripts through popup settings. The plugin stores Close Button parameter values without sanitizing them and renders those values without output escaping when popups are revisited. Administrator access and a viewer opening the affected popup are required; the issue remains reachable when unfiltered_html is disabled, including multisite.

CVSS severity4.8
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in AYS Pro Plugins Popup Box before 3.8.6 allows remote authenticated users to inject scripts through popup settings. The plugin stores Close Button parameter values without sanitizing them and renders those values without output escaping when popups are revisited. Administrator access and a viewer opening the affected popup are required; the issue remains reachable when unfiltered_html is disabled, including multisite.

The record

CVE
CVE-2023-5874
Published
Dec 4, 2023
Updated
Nov 21, 2024
Vendor
AYS Pro Plugins
Product
Popup Box
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 21, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.8.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

AYS Pro Plugins · Popup Boxversion=0 <3.8.6

Published CVSS scores

4.4WordfenceCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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