CityData CityChat up to 0.12.6 on Android ai.citydata.citychat credentials.json credentials storage

CVSS Meta Temp Score
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CTI Interest Score
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2.4$0-$5k0.00

Summaryinfo

A vulnerability was found in CityData CityChat up to 0.12.6 on Android. It has been classified as problematic. Affected by this issue is some unknown functionality of the file resources/assets/flutter_assets/assets/credentials.json of the component ai.citydata.citychat. The manipulation leads to credentials storage. This vulnerability is traded as CVE-2026-4251. An attack has to be approached locally. Furthermore, there is an exploit available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in CityData CityChat up to 0.12.6 on Android (Android App Software). This issue affects an unknown code block of the file resources/assets/flutter_assets/assets/credentials.json of the component ai.citydata.citychat. The manipulation with an unknown input leads to a credentials storage vulnerability. Using CWE to declare the problem leads to CWE-256. Storing a password in plaintext may result in a system compromise. Impacted is confidentiality.

The advisory is shared at notion.so. The identification of this vulnerability is CVE-2026-4251. The exploitation is known to be difficult. An attack has to be approached locally. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1552 for this issue.

The exploit is available at notion.so. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way. By approaching the search of inurl:resources/assets/flutter_assets/assets/credentials.json it is possible to find vulnerable targets with Google Hacking.

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 2.5
VulDB Meta Temp Score: 2.4

VulDB Base Score: 2.5
VulDB Temp Score: 2.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 2.5
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Credentials storage
CWE: CWE-256 / CWE-255
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Google Hack: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/16/2026 Advisory disclosed
03/16/2026 +0 days VulDB entry created
03/21/2026 +5 days VulDB entry last update

Sourcesinfo

Advisory: notion.so
Status: Not defined

CVE: CVE-2026-4251 (🔒)
GCVE (CVE): GCVE-0-2026-4251
GCVE (VulDB): GCVE-100-351209
scip Labs: https://www.scip.ch/en/?labs.20130704

Entryinfo

Created: 03/16/2026 07:15
Updated: 03/21/2026 13:41
Changes: 03/16/2026 07:15 (56), 03/16/2026 07:16 (3), 03/21/2026 13:41 (31)
Complete: 🔍
Submitter: fxizenta
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #771436: CITYDATA CityChat(ai.citydata.citychat) 0.12.6 Google Cloud Service Account Key Exposure (by fxizenta)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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