CVE-2023-49770Network attack vector

Administrator-level stored script execution via unsafe settings

Published Dec 14, 2023 · Updated Apr 28, 2026

Stored XSS in Smart External Link Click Monitor [Link Log] 5.0.2 and earlier allows remote authenticated users to execute scripts in browsers. The plugin stores administrator-supplied settings without sufficient input sanitization and renders them without adequate output escaping. Exploitation requires administrator privileges and affects multisite deployments or sites where unfiltered_html is disabled; a user must open an injected page.

CVSS severity4.8
Medium
EPSS probability0.39%
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 Smart External Link Click Monitor [Link Log] 5.0.2 and earlier allows remote authenticated users to execute scripts in browsers. The plugin stores administrator-supplied settings without sufficient input sanitization and renders them without adequate output escaping. Exploitation requires administrator privileges and affects multisite deployments or sites where unfiltered_html is disabled; a user must open an injected page.

The record

CVE
CVE-2023-49770
Published
Dec 14, 2023
Updated
Apr 28, 2026
Vendor
Peter Raschendorfer
Product
Smart External Link Click Monitor [Link Log]
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 14, 2023CVE 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 <=5.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Peter Raschendorfer · Smart External Link Click Monitor [Link Log]version=n/a <=5.0.2

Published CVSS scores

5.9PatchstackCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
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.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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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