CVE-2026-48997 e107: Command Injection via shell expansion in ImageMagick resize destination path
Attackers can execute arbitrary commands via shell expansion in ImageMagick resize paths when specific non-default upload and resize settings are enabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-48997?
CVE-2026-48997 is a high-severity command injection vulnerability in e107inc e107, published on 17 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
e107 is a content management system (CMS). Versions 2.3.5 and earlier contain a command injection vulnerability in the ImageMagick resize destination path. In resize_image(), the source path is escaped with escapeshellarg(), but the destination path is inserted inside raw double quotes in the convert command; in the submit-news upload flow, that destination filename includes the first six characters of user-controlled news title input. Because the title filter removes literal spaces but not tab characters, and shell expansions such as $(...) and backticks can survive into the quoted destination argument, /bin/sh -c may evaluate attacker-controlled input. Exploitation is possible only when all of the following non-default settings are enabled: resize_method=ImageMagick, subnews_attach=1, upload_enabled=1, subnews_resize is numeric between 30 and 5000, and the attacker is a non-admin in classes permitted by both subnews_class and upload_class. This issue has been fixed in version 2.3.6.
Weakness: CWE-78
Which versions are affected by CVE-2026-48997?
How do I fix CVE-2026-48997?
No fix has been published for CVE-2026-48997 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-48997 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-48997 exists.
Sources
Also known as GHSA-3j33-c9v4-4p42.