ultimate-member: Filesystem traversal
ultimate-member is affected by filesystem traversal. Exploitation requires an authenticated WordPress account. A crafted path can escape the intended directory and reach files or directories elsewhere on the server. The published affected range is 2.1.3.
- Component
- ultimate-member
- Plugin slug
ultimate-member- Affected
- 2.1.3
- Safe version
- See mitigation notes
- Published
- May 13, 2026
This CVE was published May 13, 2026 and is one of 56 known issues for this plugin.
Update, patch or deactivate.
Update ultimate-member to a release outside the affected range, or disable and remove it until a fixed version is available.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
WordPress Plugin ultimate-member 2.1.3 contains a local file inclusion vulnerability that allows authenticated attackers to include arbitrary files by manipulating the pack parameter in class-admin-upgrade.php. Attackers can send POST requests with malicious pack values to include unintended PHP files from the packages directory and execute arbitrary code.
CVE / CNA vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/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