CVE-2026-18591 in Online Shopping App
Summary
by MITRE • 08/03/2026
A vulnerability was identified in Meesho Online Shopping App up to 20260607 on Android. Affected by this vulnerability is an unknown functionality of the component com.meesho.supply. Such manipulation of the argument user_id/phone number/email address/name leads to cleartext storage of sensitive information. The attack can be executed directly on the physical device. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.
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Analysis
by VulDB Data Team • 08/03/2026
This vulnerability in the Meesho Online Shopping App represents a critical security flaw in the com.meesho.supply component that affects versions up to 20260607 on Android devices. The issue stems from improper handling of user identification data including user_id phone numbers email addresses and names which are stored in cleartext format within the application's storage mechanisms. This weakness creates a significant risk for user privacy and data protection as sensitive personal information is not adequately encrypted or obfuscated during storage operations. The vulnerability allows attackers to directly access and manipulate these stored credentials through physical device access without requiring network-based exploitation methods.
The technical implementation flaw manifests in the application's failure to apply proper encryption or hashing mechanisms when storing user identification parameters within the supply component of the Meesho platform. This cleartext storage approach violates fundamental security principles and creates an attack surface where malicious actors can easily extract sensitive information from device storage. The vulnerability specifically impacts how the application processes and retains user identifiers during various operational phases, particularly when these parameters are passed as arguments to the com.meesho.supply functionality.
The operational impact of this vulnerability extends beyond simple data exposure to encompass potential identity theft and unauthorized account access scenarios. Attackers with physical device access can exploit this weakness to obtain user credentials including phone numbers email addresses and personal names which could then be used for account takeover attacks or sold on dark web marketplaces. The fact that the exploit is publicly available and actively used increases the severity of impact as it eliminates the need for sophisticated attack techniques and makes the vulnerability accessible to threat actors with minimal technical expertise.
This security weakness directly relates to CWE-312 Cleartext Storage of Sensitive Information which is classified under the Common Weakness Enumeration framework for identifying software vulnerabilities. The vulnerability also maps to ATT&CK technique T1552.001 Unsecured Credentials within the MITRE ATT&CK framework as it involves improper handling of authentication data that could lead to credential compromise. The attack vector through physical device access aligns with mobile security threats and represents a significant concern for applications handling sensitive user information in retail environments.
The vendor was contacted early in the disclosure process which demonstrates responsible vulnerability management practices, though the public availability of exploit code suggests that immediate remediation is necessary. Mitigation strategies should include implementing proper encryption mechanisms for all stored user identification data, applying secure coding practices to prevent cleartext storage of sensitive information, and conducting comprehensive security audits of mobile application components. Additionally, developers should implement proper input validation and sanitization techniques when handling user identifiers and ensure that all sensitive data is processed through secure storage APIs rather than standard file system operations that may result in cleartext persistence. The vulnerability highlights the critical need for mobile application security testing and adherence to industry standards for protecting user privacy in e-commerce platforms.