Vulnerability 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 Score
HIGH
Related Weaknesses (CWE)
References
- https://karmainsecurity.com/KIS-2026-11
- https://karmainsecurity.com/chaining-bugs-in-discuz-from-race-condition-to-rce
- https://www.vulncheck.com/advisories/discuz-x5-0-local-file-inclusion-via-enable
- http://seclists.org/fulldisclosure/2026/Jun/5
FAQ
What is CVE-2026-49954?
CVE-2026-49954 is a vulnerability with a CVSS score of 7.2 (HIGH). 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 ...
How severe is CVE-2026-49954?
CVE-2026-49954 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-49954?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.