CVE-2026-30880 baserCMS: OS command injection vulnerability in installer
Critical 9.2
Published
Updated
Check this codebase for CVE-2026-30880 and fix it if it is affected.
What it is: CVE-2026-30880 is a critical vulnerability in Basercms Basercms, published on 31 Mar 2026.
Exploitation: There is no known exploitation of CVE-2026-30880 in the wild and no public exploit code.
Affected packages and fixed versions:
- baserproject/basercms (Packagist): affected all versions; fixed in 5.2.3
- baserproject/basercms (Packagist): affected all versions; fixed in 5.2.3
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-30880/ (Markdown: https://insights.sbomify.com/CVE-2026-30880/index.md)
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-30880?
CVE-2026-30880 is a critical vulnerability in Basercms Basercms, published on 31 Mar 2026.
Official description
baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has an OS command injection vulnerability in the installer. This issue has been patched in version 5.2.3.
Weakness: CWE-78
Which versions are affected by CVE-2026-30880?
2 open source packages ship an affected version, including baserproject/basercms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
baserproject/basercms Packagist | All versions | 5.2.3 |
baserproject/basercms Packagist | All versions | 5.2.3 |
Products include Basercms Basercms.
How do I fix CVE-2026-30880?
Upgrade baserproject/basercms to 5.2.3 or later.
Is CVE-2026-30880 being exploited?
There is no known exploitation of CVE-2026-30880 in the wild and no public exploit code.
Other vulnerabilities in Basercms Basercms
- CVE-2023-25654 baserCMS File Uploader Remote Code Execution (RCE) vulnerability
- CVE-2023-25655 baserCMS allows any file to be uploaded
- CVE-2017-10842 baserCMS SQL Injection vulnerability
- CVE-2026-21861 baserCMS: OS Command Injection Leading to Remote Code Execution (RCE)
- CVE-2026-30877 baserCMS: OS Command Injection in the baserCMS Update Functionality
Sources
Also known as GHSA-6hpg-8rx3-cwgv.