CVE-2026-49954Public exploitNetwork attack vector

Administrator RCE via unsanitized plugin path inclusion

Published Jun 15, 2026 · Updated Jun 15, 2026

Local file inclusion in Discuz! X5.0 20260320 through 20260610 allows remote authenticated users to execute PHP code as the web server user. The plugin installer stores a traversal-bearing directory value before updatecache() sanitizes it, and a forced database exception skips that check before enable_disable.php passes the stored path to include(). Administrator access and an uploaded file containing PHP code are required, after which the included file runs with the forum service's privileges.

CVSS severity8.6
High
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local file inclusion in Discuz! X5.0 20260320 through 20260610 allows remote authenticated users to execute PHP code as the web server user. The plugin installer stores a traversal-bearing directory value before updatecache() sanitizes it, and a forced database exception skips that check before enable_disable.php passes the stored path to include(). Administrator access and an uploaded file containing PHP code are required, after which the included file runs with the forum service's privileges.

The record

CVE
CVE-2026-49954
Published
Jun 15, 2026
Updated
Jun 15, 2026
Vendor
Comsenz
Product
Discuz! X
Classifications
CWE-98, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 15, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=20260320 <=20260610

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Comsenz · Discuz! Xversion=20260320 <=20260610

Published CVSS scores

8.6VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.2VulnCheckCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-98Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
T1190Exploit Public-Facing Application

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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