In XE 1.116, when uploading the Normal button, there is no restriction on the file suffix, which leads to any file uploading to the files directory. Since .htaccess only restricts the PHP type, uploading HTML-type files leads to stored XSS vulnerabilities. If the .htaccess configuration is improper, for example before the XE 1.11.2 version, you can upload the PHP type file to GETSHELL.
Published 2022-02-09 16:15:14
Updated 2022-02-16 22:25:32
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Cross site scripting (XSS)

Exploit prediction scoring system (EPSS) score for CVE-2021-44912

0.06%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 23 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-44912

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
3.5
LOW AV:N/AC:M/Au:S/C:N/I:P/A:N
6.8
2.9
NIST
5.4
MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
2.3
2.7
NIST

CWE ids for CVE-2021-44912

References for CVE-2021-44912

  • https://github.com/xpressengine/xe-core/issues/2433
    Unrestricted file upload vulnerability in Latest Release 3.3.16 /index.php?module=admin&act=dispMenuAdminSiteMap · Issue #2433 · xpressengine/xe-core · GitHub
    Exploit;Issue Tracking;Third Party Advisory

Products affected by CVE-2021-44912

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