CVE-2021-24601Public exploitNetwork attack vector

Stored XSS via unsanitized notification settings

Published Sep 6, 2021 · Updated Aug 3, 2024

Stored XSS in Syam Mohan WPFront Notification Bar before 2.1.0.08087 allows remote authenticated users to inject scripts through settings. Message Text and other text settings accept markup that is stored and rendered without adequate sanitization or output escaping on frontend and settings pages. High-privilege WordPress access is required; loading an affected page executes the stored script in the visitor's browser context.

CVSS severity5.4
Medium
EPSS probability0.62%
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 Syam Mohan WPFront Notification Bar before 2.1.0.08087 allows remote authenticated users to inject scripts through settings. Message Text and other text settings accept markup that is stored and rendered without adequate sanitization or output escaping on frontend and settings pages. High-privilege WordPress access is required; loading an affected page executes the stored script in the visitor's browser context.

The record

CVE
CVE-2021-24601
Published
Sep 6, 2021
Updated
Aug 3, 2024
Vendor
Syam Mohan
Product
WPFront Notification Bar
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 6, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=2.1.0.08087 <2.1.0.08087

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Syam Mohan · WPFront Notification Barversion=2.1.0.08087 <2.1.0.08087

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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