CVE-2026-30452Network attack vector

Authenticated article overwrite via duplicate-and-save ID manipulation

Published Apr 21, 2026 · Updated Apr 21, 2026

Broken access control in Textpattern CMS 4.9.0 allows remote authenticated users to overwrite articles owned by higher-privileged users. The duplicate-and-save workflow in textpattern/include/txp_article.php accepts a manipulated article ID without enforcing ownership before saving. Low-privilege article-management access is required, and the demonstrated consequence is unauthorized modification of stored article content.

CVSS severity6.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Broken access control in Textpattern CMS 4.9.0 allows remote authenticated users to overwrite articles owned by higher-privileged users. The duplicate-and-save workflow in textpattern/include/txp_article.php accepts a manipulated article ID without enforcing ownership before saving. Low-privilege article-management access is required, and the demonstrated consequence is unauthorized modification of stored article content.

The record

CVE
CVE-2026-30452
Published
Apr 21, 2026
Updated
Apr 21, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-284, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 21, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1565.001Stored Data Manipulation

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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