CVE-2025-46730 Mobile Security Framework (MobSF) Allows Web Server Resource Exhaustion via ZIP of Death Attack
An attacker can cause server-wide denial of service by uploading a malicious ZIP bomb to MobSF, exhausting disk space on the hosting server.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-46730?
CVE-2025-46730 is a medium-severity denial of service vulnerability in Mobile-Security-Framework-MobSF, published on 5 May 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
MobSF is a mobile application security testing tool used. Typically, MobSF is deployed on centralized internal or cloud-based servers that also host other security tools and web applications. Access to the MobSF web interface is often granted to internal security teams, audit teams, and external vendors. MobSF provides a feature that allows users to upload ZIP files for static analysis. Upon upload, these ZIP files are automatically extracted and stored within the MobSF directory. However, in versions up to and including 4.3.2, this functionality lacks a check on the total uncompressed size of the ZIP file, making it vulnerable to a ZIP of Death (zip bomb) attack. Due to the absence of safeguards against oversized extractions, an attacker can craft a specially prepared ZIP file that is small in compressed form but expands to a massive size upon extraction. Exploiting this, an attacker can exhaust the server's disk space, leading to a complete denial of service (DoS) not just for MobSF, but also for any other applications or websites hosted on the same server. This vulnerability can lead to complete server disruption in an organization which can affect other internal portals and tools too (which are hosted on the same server). If some organization has created their customized cloud based mobile security tool using MobSF core then an attacker can exploit this vulnerability to crash their servers. Commit 6987a946485a795f4fd38cebdb4860b368a1995d fixes this issue. As an additional mitigation, it is recommended to implement a safeguard that checks the total uncompressed size of any uploaded ZIP file before extraction. If the estimated uncompressed size exceeds a safe threshold (e.g., 100 MB), MobSF should reject the file and notify the user.
Weakness: CWE-409
Which versions are affected by CVE-2025-46730?
3 open source packages ship an affected version, including mobsf. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mobsf PyPI | All versions to 4.3.2 | None |
mobsf PyPI | All versions to 4.3.2 | None |
mobsf PyPI | All versions to 4.3.2 | None |
Products include Opensecurity Mobile Security Framework.
How do I fix CVE-2025-46730?
No fix has been published for CVE-2025-46730 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-46730 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-46730 exists.
Other vulnerabilities in Mobile-Security-Framework-MobSF
- CVE-2025-46335 Mobile Security Framework (MobSF) Allows Stored Cross Site Scripting (XSS) via malicious SVG Icon Upload
- CVE-2025-24805 Local Privilege Escalation in MobSF
- CVE-2025-24803 Stored Cross-Site Scripting (XSS) in MobSF
- CVE-2026-24490 MobSF has Stored XSS via Manifest Analysis - Dialer Code Host Field
- CVE-2024-53999 Mobile Security Framework (MobSF) Stored Cross-Site Scripting Vulnerability in "Diff or Compare" Functionality
Sources
Also known as GHSA-c5vg-26p8-q8cr, PYSEC-2026-1671.