CVE-2023-41387
CVE-2023-41387 is a critical-severity vulnerability in Patreon Flutter Downloader with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.
Key facts
- Severity: Critical (CVSS 3.x base score 9.1)
- EPSS exploit prediction: 1% (47th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-89
- Affected product: Patreon Flutter Downloader
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2023-41387?
- 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.
- How severe is CVE-2023-41387?
- CVE-2023-41387 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
- Is CVE-2023-41387 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-41387?
- CVE-2023-41387 affects Patreon Flutter Downloader. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-41387?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2023-41387 published?
- CVE-2023-41387 was published on 2023-09-19 and last updated on 2026-06-17.
References
- https://pub.dev/packages/flutter_downloader/changelog
- https://seredynski.com/articles/exploiting-ios-apps-to-extract-session-tokens-and-overwrite-user-data
Affected products (1)
- cpe:2.3:a:patreon:flutter_downloader:*:*:*:*:*:*:*:*
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