CVE-2026-108790 Details
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.
A path traversal vulnerability has been identified in westboy CicadasCMS versions prior to commit 2431154dac8d0735e04f1fd2a3c3556668fc8dab. The issue resides in the Backend Template Editor component, specifically within the TemplateController.save function. This vulnerability allows authenticated users with the template:save permission to manipulate file paths and overwrite files on the server. In deployments on external Servlet containers, this could lead to remote code execution by writing a .jsp web shell into the web application directory.
To address this vulnerability, restrict file writes to the TEMPLATE_PATH directory, ensuring that only authorized template files can be modified. Implement checks to reject absolute paths and directory traversal sequences. Additionally, add CSRF protection and audit capabilities to the template save endpoint. For deployments in external Servlet containers, keep the template directory separate from executable web directories and prevent template content from being saved with script file extensions.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 12, 2026CISA-ADP
Assessed Oct 15, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/wawyw/cve_report/blob/main/CicadasCMS_1.md | [email protected] | ExploitRemedyTechnical Analysis |
| https://vuldb.com/cve/CVE-2026-108790 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/959802 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/416569 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/416569/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| westboy CicadasCMS | 2431154dac8d0735e04f1fd2a3c3556668fc8dab |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 15, 2026 | CVE Modified | CISA-ADP |
| Oct 12, 2026 | New CVE Received | [email protected] |