What’s Vulnerable › Vulnerabilities

CVE-2023-41387

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-09-19 · updated 2026-06-17
• Weakness: CWE-89

Description

A SQL injection in the flutter_downloader component through 1.11.1 for iOS allows remote attackers to steal session tokens and overwrite arbitrary files inside the app's container. The internal database of the framework is exposed to the local user if an app uses UIFileSharingEnabled and LSSupportsOpeningDocumentsInPlace properties. As a result, local users can obtain the same attack primitives as remote attackers by tampering with the internal database of the framework on the device.

Affected products

• Patreon Flutter Downloader: before 1.11.2 — fixed in 1.11.2

How to fix

Upgrade to a fixed version: Patreon Flutter Downloader 1.11.2. Check the vendor advisory for mitigations.

References

• https://pub.dev/packages/flutter_downloader/changelog
• https://seredynski.com/articles/exploiting-ios-apps-to-extract-session-tokens-and-overwrite-user-data
• https://pub.dev/packages/flutter_downloader/changelog
• https://seredynski.com/articles/exploiting-ios-apps-to-extract-session-tokens-and-overwrite-user-data

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