# CVE-2026-114624: baserCMS object injection in widget deserialization

Source: https://junglewise.ai/threats/cve-2026-114624-basercms-is-a-website-development-framework-in-versions-5-0-0  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-23. Updated: 2026-10-23  
License: CC BY 4.0 with a link back

CVE-2026-114624 · Severity: high · CVSS 7.2 · Published 2026-10-23

baserCMS is a website development framework used to build and manage websites. An administrator or attacker with widget-editing capability can store malicious data that executes arbitrary code when the website loads. An attacker gaining such capability through another vulnerability could achieve remote code execution on the web server without needing direct authentication to trigger the attack.

Technologies: [Baserproject baserCMS](https://junglewise.ai/threats/technologies/baserproject-basercms-1). Vendors: [Baserproject](https://junglewise.ai/threats/vendors/baserproject).

## Quick answers

**Is CVE-2026-114624 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-114624 being exploited in the wild.

**How severe is CVE-2026-114624?** High severity, with a CVSS score of 7.2, published 23 October 2026.

**Which products and versions are affected?** Baserproject baserCMS 5.0.0 before 5.3.2, 5.4.0 before 5.4.2.

**Is there a fix for CVE-2026-114624?** Yes: fixed in 5.3.2, 5.4.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-114624 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-114624?** Check whether you run Baserproject baserCMS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 5.3.2, 5.4.2

## Technical details

The widget-area entity deserializes stored widget data using unserialize() without an allowed_classes restriction, permitting gadget chain exploitation. An authenticated or compromised admin account can submit a serialized payload via the JSON API that bypasses input validation, and subsequent page requests trigger unauthenticated deserialization leading to command execution via Process::fromShellCommandline() or similar gadgets. The vulnerability requires initial privileged write access to plant the payload but enables repeated unauthenticated code execution until the database is repaired.

## Affected products

- baserproject baserCMS 5.0.0 before 5.3.2, 5.4.0 before 5.4.2

## Timeline

- 2026-10-23: disclosed

## References

- [https://github.com/baserproject/basercms/commit/38c778e92688e7f5d620a4c6b47ad7fb9e2c1529](https://github.com/baserproject/basercms/commit/38c778e92688e7f5d620a4c6b47ad7fb9e2c1529)
- [https://github.com/baserproject/basercms/commit/59dfe61e193ae3274c195c15e7b185816d2db9db](https://github.com/baserproject/basercms/commit/59dfe61e193ae3274c195c15e7b185816d2db9db)

## Related threats

- [baserCMS email field address validation bypass](https://junglewise.ai/threats/cve-2026-115479-basercms-is-a-website-development-framework-in-versions-5-2-5)
- [baserCMS path traversal in BcThemeFile plugin admin interface](https://junglewise.ai/threats/cve-2026-114623-basercms-is-a-website-development-framework-in-versions-5-0-0)
- [baserCMS BcThemeFile plugin path traversal in API](https://junglewise.ai/threats/cve-2026-114622-basercms-is-a-website-development-framework-in-versions-5-2-3)
- [baserCMS SQL injection in admin panel](https://junglewise.ai/threats/cve-2026-114621-basercms-is-a-website-development-framework-in-versions-5-0-0)