CVE-2026-108790 westboy CicadasCMS Backend Template Editor save TemplateController.save path traversal
Remote attackers with permissions can exploit a path traversal vulnerability in the backend template editor to read or modify arbitrary files.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-108790?
CVE-2026-108790 is a medium-severity path traversal vulnerability in westboy CicadasCMS, published on 12 Oct 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A security flaw has been discovered in westboy CicadasCMS up to 2431154dac8d0735e04f1fd2a3c3556668fc8dab. This impacts the function TemplateController.save of the file /system/cms/template/save of the component Backend Template Editor. The manipulation results in path traversal. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Weakness: CWE-22
Which versions are affected by CVE-2026-108790?
How do I fix CVE-2026-108790?
No fix has been published for CVE-2026-108790 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-108790 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108790 exists.
Sources
Also known as GHSA-r594-rf5q-r69h.