CVE-2024-39203Public exploitNetwork attack vector

Stored XSS via unescaped mail settings

Published Jul 8, 2024 · Updated Mar 13, 2025

Stored XSS in Z-BlogPHP 1.7.3 Backend Theme Management allows context-dependent attackers to execute scripts through crafted mail settings. The Tuoyuan Pure Theme accepts script-bearing SMTP_PASS and related mail-field values and renders them as active markup instead of neutralizing them. Exploitation requires a user to view the affected backend content, where the script can read or alter data available to that browser session.

CVSS severity6.1
Medium
EPSS probability0.68%
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 Z-BlogPHP 1.7.3 Backend Theme Management allows context-dependent attackers to execute scripts through crafted mail settings. The Tuoyuan Pure Theme accepts script-bearing SMTP_PASS and related mail-field values and renders them as active markup instead of neutralizing them. Exploitation requires a user to view the affected backend content, where the script can read or alter data available to that browser session.

The record

CVE
CVE-2024-39203
Published
Jul 8, 2024
Updated
Mar 13, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 8, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 13, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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