Data Exposure Vulnerability in CityData CityChat on Android Devices
CVE-2026-4251

2LOW

Key Information:

Vendor

Citydata

Status
Citychat
Vendor
CVE Published:
16 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-4251?

A data exposure vulnerability has been identified in the CityData CityChat app for Android devices, specifically affecting version 0.12.6. The vulnerability involves improper handling of sensitive information located in the credentials.json file, which can lead to unprotected storage of credentials. While exploitation requires local access to the device, the complexity of executing the attack suggests that it may not be easily achievable. The potential for public exploitation highlights the urgency for users to secure their applications. Despite early notification to the vendor, there has been no response regarding remediation.

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Affected Version(s)

CityChat 0.12.0

CityChat 0.12.1

CityChat 0.12.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-4251 - Proof of Concept

References

https://vuldb.com/?id.351209
vdb-entry
https://vuldb.com/?ctiid.351209
signaturepermissions-required
https://vuldb.com/?submit.771436
third-party-advisory

CVSS V4

Score:
2
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

fxizenta (VulDB User)
VulDB
JSON
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