XpressEngine file upload vulnerability

published 2023-01-20 3 y ago modified 2026-06-17 4 mo ago also GHSA-8r5j-22j5-w4cm , EUVD-2023-0413

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits: 0; none known

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.

Patch / fix

fixed in 2

packagist xpressengine/xpressengine 3.0.15
xpressengine xpressengine 3.0.14

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: 19 mo ago (2025-04-02)

Exploit prediction

1.21% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
packagist	xpressengine/xpressengine	<3.0.15	3.0.15

Affected products

XEHub XE3 XpresesEngine

Classification

Weakness

CWE-434 Unrestricted Upload of File with Dangerous Type

References

boho.or.kr /krcert/secNoticeView.do?bulletin_writing_sequence=67125
web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2021-26642
advisory
github.com /xpressengine/xpressengine/issues/1366
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary