Vulnerability · Published Jan 20, 2023 · Assigned by krcert

CVE-2021-26642XpressEngine file upload vulnerability

High 8.8

In plain English

A high-severity unrestricted file upload in XE3 XpresesEngine from XEHub. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 69% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.2%top 31.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

When uploading an image file to a bulletin board developed with XpressEngine, a vulnerability in which an arbitrary file can be uploaded due to insufficient verification of the file. A remote attacker can use this vulnerability to execute arbitrary code on the server where the bulletin board is running.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	xpressengine/xpressengine	3.0.15	GHSA-8r5j-22j5-w4cm

Affected products (as reported)

Vendor	Product	Versions
XEHub	XE3 XpresesEngine	3.0.14 – through 3.0.14

Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=67125