CVE-2026-18648 Details
Description
A vulnerability was detected in Blix Email Blue Mail Calendar App 2.2.305. Impacted is the function FileDirectory.getDataColumn/FileDirectory.getFileFromUri of the component react-native-receive-sharing-intent. The manipulation of the argument _display_name results in path traversal. The attack is only possible with local access. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
A path traversal vulnerability has been identified in Blix Email Blue Mail Calendar App version 2.2.305. The issue arises in the function FileDirectory.getDataColumn/FileDirectory.getFileFromUri, which is part of the component react-native-receive-sharing-intent. The vulnerability allows local attackers to manipulate the _display_name argument, leading to arbitrary file writes in the app's private storage. This exploitation can be achieved without any special permissions or user interaction, except for the handling of the share intent.
Users are advised to update to a version of Blix Email Blue Mail Calendar App that includes the fix for this vulnerability. Additionally, the exported MainActivity SEND filter could be narrowed to reduce exposure.
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 Aug 3, 2026CISA-ADP
Assessed Aug 5, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/actuator/me.bluemail.mail | [email protected] | ExploitTechnical Analysis |
| https://vuldb.com/cve/CVE-2026-18648 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/855049 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/385567 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/385567/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 |
|---|---|
| Blix Email Blue Mail Calendar App | 2.2.305 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 5, 2026 | CVE Modified | CISA-ADP |
| Aug 3, 2026 | New CVE Received | [email protected] |