CVE-2024-13898Network attack vector

Administrator-level stored XSS via unescaped banner settings

Published Apr 4, 2025 · Updated Apr 8, 2026

Stored XSS in Ryan Petersen Simple Banner 3.0.4 and earlier allows remote authenticated users to inject scripts through admin settings. The plugin stores administrator-supplied setting values without sufficient sanitization and emits them into banner page output without context-appropriate escaping. Administrator-level access is required, and the flaw is reachable only on multisite installations or sites where unfiltered_html is disabled; injected scripts run in the browser of anyone who opens an affected page.

CVSS severity4.4
Medium
EPSS probability0.23%
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 Ryan Petersen Simple Banner 3.0.4 and earlier allows remote authenticated users to inject scripts through admin settings. The plugin stores administrator-supplied setting values without sufficient sanitization and emits them into banner page output without context-appropriate escaping. Administrator-level access is required, and the flaw is reachable only on multisite installations or sites where unfiltered_html is disabled; injected scripts run in the browser of anyone who opens an affected page.

The record

CVE
CVE-2024-13898
Published
Apr 4, 2025
Updated
Apr 8, 2026
Vendor
Ryan Petersen
Product
Simple Banner
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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=0 <=3.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Ryan Petersen · Simple Bannerversion=0 <=3.0.4

Published CVSS scores

4.4WordfenceCVSS:3.1/AV:N/AC:H/PR:H/UI:N/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
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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