CVE-2026-109218 WordPress Contact Manager - Unrestricted File Upload

WordPress Contact Manager plugin <= 9.1.2 contains an arbitrary file upload vulnerability caused by an incomplete extension blacklist in add_message function, letting unauthenticated attackers upload executable files, exploit requires Apache with libapache2-mod-php and timely file retrieval.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
EPSS
0.64% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Unrestricted File Upload
Impact
Remote Code Execution, Unrestricted File Upload
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
28 October 2026
Updated
29 October 2026
Weakness
CWE-434

Vendor fix

Update to the latest version of Contact Manager plugin.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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