CVE-2018-25047Network attack vector

Cross-site scripting via unescaped mailto output

Published Sep 14, 2022 · Updated Nov 3, 2025

Cross-site scripting in Smarty before 3.1.47 and 4.x before 4.2.1 allows remote authenticated users to inject JavaScript through parameterized web pages. The smarty_function_mailto implementation inserted attacker-controlled address and display text into generated mailto HTML and JavaScript without appropriate escaping. Exploitation requires a page that invokes this plugin with GET or POST influenced values and a victim who loads the page; the bounded impact is script execution in the victim's browser context.

CVSS severity5.4
Medium
EPSS probability1.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Smarty before 3.1.47 and 4.x before 4.2.1 allows remote authenticated users to inject JavaScript through parameterized web pages. The smarty_function_mailto implementation inserted attacker-controlled address and display text into generated mailto HTML and JavaScript without appropriate escaping. Exploitation requires a page that invokes this plugin with GET or POST influenced values and a victim who loads the page; the bounded impact is script execution in the victim's browser context.

The record

CVE
CVE-2018-25047
Published
Sep 14, 2022
Updated
Nov 3, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/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
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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