CVE-2026-4251 Details
Description
A vulnerability was determined in CityData CityChat up to 0.12.6 on Android. Affected by this vulnerability is an unknown functionality of the file resources/assets/flutter_assets/assets/credentials.json of the component ai.citydata.citychat. Executing a manipulation can lead to unprotected storage of credentials. The attack requires local access. A high complexity level is associated with this attack. The exploitation appears to be difficult. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
A vulnerability exists in CityData CityChat for Android, in versions up to 0.12.6. The issue arises from the application embedding a full Google Cloud service account key file within its assets, specifically in 'resources/assets/flutter_assets/assets/credentials.json'. This exposure allows an attacker, through reverse engineering, to extract the file and use the credentials to authenticate with Google Cloud Platform. The stolen credentials provide unauthorized read-only access to Dialogflow APIs, enabling the retrieval of agent details and a list of all intents. Such access could lead to information disclosure and potential misuse of the extracted conversational logic.
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 Mar 16, 2026CISA-ADP
Assessed Mar 16, 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://vuldb.com/?ctiid.351209 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/?id.351209 | [email protected] | AdvisoryExploitPartial Content |
| https://vuldb.com/?submit.771436 | [email protected] | ExploitTechnical Description |
| https://www.notion.so/Google-Cloud-Service-Account-Key-Exposure-Leading-to-Dialogflow-Data-Access-in-ai-citydata-citychat-3192de3f97fb80ca9739ebc6329c8449?source=copy_link | [email protected] | ExploitPartial Content |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-255 | Credentials Management Errors | [email protected] |
| CWE-256 | Plaintext Storage of a Password | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| CityData CityChat | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Mar 16, 2026 | New CVE Received | [email protected] |