CVE-2021-26642 XpressEngine file upload vulnerability
Remote attackers can upload arbitrary files to XpressEngine bulletin boards, leading to arbitrary code execution on the server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-26642?
CVE-2021-26642 is a high-severity vulnerability in XEHub XE3 XpresesEngine, published on 20 Jan 2023. Any signed-in user can exploit it over the network, with no action from the victim.
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.
Weakness: CWE-434
Which versions are affected by CVE-2021-26642?
2 open source packages ship an affected version, including xpressengine/xpressengine. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
xpressengine/xpressengine Packagist | All versions | 3.0.15 |
xpressengine/xpressengine Packagist | All versions | 3.0.15 |
Products include Xpressengine Xpressengine.
How do I fix CVE-2021-26642?
Upgrade xpressengine/xpressengine to 3.0.15 or later.
Is CVE-2021-26642 being exploited?
There is no known exploitation of CVE-2021-26642 in the wild and no public exploit code.
Other vulnerabilities in XEHub XE3 XpresesEngine
Sources
Also known as GHSA-8r5j-22j5-w4cm.