CVE-2021-24547Public exploitNetwork attack vector

Stored XSS via unsanitized separator setting

Published Aug 23, 2021 · Updated Aug 3, 2024

Stored XSS in KN Fix Your Title 1.0.1 and earlier allows remote authenticated users to execute JavaScript via the separator field. The separator setting accepts an HTML script payload, saves it in the database, and later renders it without neutralizing executable markup. Access to the plugin's settings is required, and the script runs only when another user triggers the affected title functionality in a browser.

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 KN Fix Your Title 1.0.1 and earlier allows remote authenticated users to execute JavaScript via the separator field. The separator setting accepts an HTML script payload, saves it in the database, and later renders it without neutralizing executable markup. Access to the plugin's settings is required, and the script runs only when another user triggers the affected title functionality in a browser.

The record

CVE
CVE-2021-24547
Published
Aug 23, 2021
Updated
Aug 3, 2024
Vendor
KN Fix Your Title Project
Product
KN Fix Your Title
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 23, 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=1.0.1 <=1.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

KN Fix Your Title Project · KN Fix Your Titleversion=1.0.1 <=1.0.1

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')
T1059.007JavaScript/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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