CVE-2026-41412 Details
Description
alf.io is an open source ticket reservation system for conferences, trade shows, workshops, and meetups. Prior to version 2.0-M5-2606, the alf.io extension sandbox injects a fully-functional HTTP client (`simpleHttpClient`) into every extension script's scope. The `postFileAndSaveResponse()` method accepts an arbitrary filesystem path as its `file` parameter and reads the file contents using `new FileInputStream(file)` with no path validation, directory restriction, or allowlist. A malicious extension script can read any file accessible to the JVM process user and exfiltrate it to an attacker-controlled server via HTTP POST. Version 2.0-M5-2606 patches the issue.
A vulnerability exists in alf.io versions through 2.0-M5-2509-1, allowing authenticated administrators to read arbitrary files accessible to the JVM process user. The issue arises from the extension sandbox injecting a fully-functional HTTP client, 'simpleHttpClient', into every extension script. The 'postFileAndSaveResponse()' method, which lacks path validation, directory restrictions, and allowlists, can be exploited to exfiltrate file contents to an attacker-controlled server via HTTP POST. This vulnerability could lead to the exposure of sensitive information such as database credentials, TLS private keys, SSH private keys, cloud credentials, and application secrets.
Users can upgrade to alf.io version 2.0-M5-2606 or later to address this vulnerability.
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 Jun 2, 2026CISA-ADP
Assessed Jun 3, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/alfio-event/alf.io/security/advisories/GHSA-6m62-53cw-4373 | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/alfio-event/alf.io/security/advisories/GHSA-6m62-53cw-4373 | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
| CWE-73 | External Control of File Name or Path | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| alf.io | <= 2.0-M5-2509-1 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 21, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 3, 2026 | CVE Modified | CISA-ADP |
| Jun 2, 2026 | New CVE Received | [email protected] |