CVE-2026-115481 baserCMS is a website development framework.
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-115481?
CVE-2026-115481 is a high-severity vulnerability in baserproject basercms, published on 23 Oct 2026.
Official description
baserCMS is a website development framework. Starting in version 5.0.0-beta1 and prior to versions 5.3.2 and 5.4.2, `PermissionGroupsService::build()` reads a plugin's `config/permission.php` to decide what each user group may reach. When that file is absent it writes a wildcard allow rule instead: `url` `/baser/<prefix>/<plugin>/*`, `method` `*`, `auth` true, for every non-admin group. BcCustomContent has no such file in any release. After an administrator installs it, the default `operators` group can store and execute arbitrary PHP under the document root. Versions 5.3.2 and 5.4.2 patch the issue.
Weakness: CWE-434
Which versions are affected by CVE-2026-115481?
How do I fix CVE-2026-115481?
No fix has been published for CVE-2026-115481 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-115481 being exploited?
There is no known exploitation of CVE-2026-115481 in the wild and no public exploit code.
Sources
Also known as GHSA-8jrp-4h7c-m679.