CVE-2024-12816Network attack vector

Contributor-level stored XSS via unescaped shortcode attributes

Published Jan 25, 2025 · Updated Apr 8, 2026

Stored XSS in the notice-board shortcode in Notice Board by Towkir 3.1 and earlier allows remote authenticated users to inject scripts. The shortcode handler accepts user-supplied attributes without sufficient sanitization and emits them into page output without context-appropriate escaping. Contributor-level access is sufficient; the injected script runs in each visitor's browser when the affected page is opened, allowing page-content manipulation and access to data available to that browser session.

CVSS severity6.4
Medium
EPSS probability0.31%
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 the notice-board shortcode in Notice Board by Towkir 3.1 and earlier allows remote authenticated users to inject scripts. The shortcode handler accepts user-supplied attributes without sufficient sanitization and emits them into page output without context-appropriate escaping. Contributor-level access is sufficient; the injected script runs in each visitor's browser when the affected page is opened, allowing page-content manipulation and access to data available to that browser session.

The record

CVE
CVE-2024-12816
Published
Jan 25, 2025
Updated
Apr 8, 2026
Vendor
mastowkir
Product
Notice Board by Towkir
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 25, 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 <=3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

mastowkir · Notice Board by Towkirversion=0 <=3.1

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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