CVE-2026-38669Public exploitNetwork attack vector

Stored script execution via crafted blog content

Published May 4, 2026 · Updated May 4, 2026

Stored cross-site scripting in wCMS 1.4 allows remote attackers to execute script in another user's browser through a crafted new blog. The blog-creation workflow accepts an HTML image tag with an onerror handler and later renders it without neutralizing the event attribute. No authentication is required, but another user must open the created site; the demonstrated consequence is attacker-supplied JavaScript in that user's browser.

CVSS severity6.1
Medium
EPSS probability0.15%
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 wCMS 1.4 allows remote attackers to execute script in another user's browser through a crafted new blog. The blog-creation workflow accepts an HTML image tag with an onerror handler and later renders it without neutralizing the event attribute. No authentication is required, but another user must open the created site; the demonstrated consequence is attacker-supplied JavaScript in that user's browser.

The record

CVE
CVE-2026-38669
Published
May 4, 2026
Updated
May 4, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 4, 2026CVE publishedPublication date reported by the CVE source.
  2. May 4, 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?

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

6.1CISA-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.

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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
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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