CVE-2024-31387Network attack vector

Stored XSS via unsanitized admin settings

Published Apr 11, 2024 · Updated Apr 28, 2026

Stored XSS in AYS Pro Plugins Facebook Popup Likebox 3.7.2 and earlier allows remote authenticated users to inject scripts via admin settings. The admin settings path stores user-supplied values without sufficient input sanitization and renders them without adequate output escaping. Administrator privileges and a multisite installation or disabled unfiltered_html capability are required; the script executes in a visitor's browser under the site's origin.

CVSS severity5.9
Medium
EPSS probability0.32%
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 Facebook Popup Likebox 3.7.2 and earlier allows remote authenticated users to inject scripts via admin settings. The admin settings path stores user-supplied values without sufficient input sanitization and renders them without adequate output escaping. Administrator privileges and a multisite installation or disabled unfiltered_html capability are required; the script executes in a visitor's browser under the site's origin.

The record

CVE
CVE-2024-31387
Published
Apr 11, 2024
Updated
Apr 28, 2026
Vendor
AYS Pro Plugins
Product
Facebook Popup Likebox
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record 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=n/a <=3.7.2 changes=[{"at":"3.7.3","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

AYS Pro Plugins · Facebook Popup Likeboxversion=n/a <=3.7.2 changes=[{"at":"3.7.3","status":"unaffected"}]

Published CVSS scores

5.9PatchstackCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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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