CVE-2025-49137Public exploitNetwork attack vector

Stored cross-site scripting via alternate HTML tags

Published Jun 9, 2025 · Updated Jun 10, 2025

Stored cross-site scripting in HAX CMS PHP 10.0.6 and earlier allows remote authenticated users to execute JavaScript in site visitors' browsers. The saveNode and saveManifest endpoints persist editor-supplied content in site JSON, and generated pages render alternate HTML tags without neutralizing script-capable attributes. An authenticated editor account is required; stored payloads run when visitors load the affected site, enabling theft of session cookies or other browser-accessible data.

CVSS severity8.5
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in HAX CMS PHP 10.0.6 and earlier allows remote authenticated users to execute JavaScript in site visitors' browsers. The saveNode and saveManifest endpoints persist editor-supplied content in site JSON, and generated pages render alternate HTML tags without neutralizing script-capable attributes. An authenticated editor account is required; stored payloads run when visitors load the affected site, enabling theft of session cookies or other browser-accessible data.

The record

CVE
CVE-2025-49137
Published
Jun 9, 2025
Updated
Jun 10, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, CWE-80, CWE-87, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 10, 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

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
8.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
CWE-87Improper Neutralization of Alternate XSS Syntax
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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