CVE-2026-49954

HIGH EPSS 40.5%
Published Jun 15, 20262w ago · Modified Jun 17, 20261w ago
8.6 CVSS 4.0
High
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Published Jun 15, 2026 2w ago
Last Modified Jun 17, 2026 1w ago

Description

Discuz! X5.0 releases 20260320 through 20260610 contain a local file inclusion vulnerability that allows authenticated administrators to execute arbitrary code by importing a specially crafted plugin configuration containing path traversal sequences in the directory attribute. Attackers can trigger an exception during plugin installation to bypass sanitization routines, causing malicious paths to be stored unsanitized and subsequently passed to include(), which combined with file upload functionality escalates to arbitrary code execution in the context of the web server user.

CVSS Details

Base Score
8.6
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
40.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-98

References 4

  • seclists.org http://seclists.org/fulldisclosure/2026/Jun/5
  • karmainsecurity.com https://karmainsecurity.com/KIS-2026-11
  • karmainsecurity.com https://karmainsecurity.com/chaining-bugs-in-discuz-from-race-condition-to-rce
  • vulncheck.com https://www.vulncheck.com/advisories/discuz-x5-0-local-file-inclusion-via-enable-disable-php-plugin-directory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.