Blix Email Blue Mail Calendar App 2.2.305 react-native-receive-sharing-intent _display_name path traversal

Summaryinfo

A vulnerability was found in Blix Email Blue Mail Calendar App 2.2.305. It has been rated as critical. The affected element is the function FileDirectory.getDataColumn/FileDirectory.getFileFromUri of the component react-native-receive-sharing-intent. This manipulation of the argument _display_name causes path traversal. This vulnerability is tracked as CVE-2026-18648. The attack is restricted to local execution. Moreover, an exploit is present. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in Blix Email Blue Mail Calendar App 2.2.305. It has been declared as critical. Affected by this vulnerability is the function FileDirectory.getDataColumn/FileDirectory.getFileFromUri of the component react-native-receive-sharing-intent. The manipulation of the argument _display_name with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-18648. The exploitation appears to be easy. Attacking locally is a requirement. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Calendar Software

Vendor

• Blix

Name

• Email Blue Mail Calendar App

Version

• 2.2.305

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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Threat Intelligenceinfo

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Submitinfo

Accepted

• Submit #855049: BlueMail https://play.google.com/store/apps/details?id=me.bluemail.mail 2.2.305 (versionCode 43203). Path Traversal (by Actuator)

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