CVE-2026-1555

critical · 9.8

The WebStack theme for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the io_img_upload() function in all versions up to, and including, 1.2024. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

9.8

CVSS

1.0%

EPSS (exploit prob.)

61st

EPSS percentile

2026-04-15

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-434

References

https://github.com/owen0o0/WebStack/blob/master/inc/ajax.php#L5
https://github.com/owen0o0/WebStack/tree/master
https://www.wordfence.com/threat-intel/vulnerabilities/id/b97805de-1b47-4c9f-baae-2e37c1b78570?source=cve

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-1555