PatchSiren cyber security CVE debrief
CVE-2026-12198 Microweber CVE debrief
A weakness has been identified in Microweber up to 2.0.20. This affects the function userfiles_path of the file /api_nosession/thumbnail_img of the component API Endpoint. Executing a manipulation of the argument cache_path_relative can lead to path traversal. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
- Vendor
- Microweber
- Product
- Microweber
- CVSS
- MEDIUM 5.5
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-06-15
- Original CVE updated
- 2026-06-15
- Advisory published
- 2026-06-15
- Advisory updated
- 2026-06-15
Who should care
Users of Microweber up to 2.0.20
Technical summary
The vulnerability is a path traversal issue in the userfiles_path function of the /api_nosession/thumbnail_img file in the Microweber API Endpoint. An attacker can manipulate the cache_path_relative argument to traverse the file system.
Defensive priority
MEDIUM
Recommended defensive actions
- Update Microweber to a version beyond 2.0.20
- Restrict access to the /api_nosession/thumbnail_img endpoint
- Validate and sanitize user input to prevent path traversal attacks
Evidence notes
The CVE-2026-12198 vulnerability has been documented by NVD and Vuldb.
Official resources
CVE-2026-12198 was published on 2026-06-15T00:16:43.803Z and has not been modified since.