Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
MobSF (PyPI package name mobsf is the only one listed, so no need to qualify) versions before 4.5.1 are vulnerable. When extracting uploaded ZIP or APK files, a per-file size check logs a "Skipping" message for files over 400 MB but does not stop extraction, so the oversized file is still written to disk. An attacker who gets a crafted archive scanned, for example one submitted for security review, can exhaust disk space and block further scans. Upgrade to version 4.5.1. The source gives few details on the exact exploitation steps.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 4.9 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0059, the 48th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:39 UTC First seen by agentprime
- 31 Oct 2026, 14:39 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-x768-8642-mmq9
- OSV: GHSA-x768-8642-mmq9
- github.com/MobSF/Mobile-Security-Framework-MobSF/security/advisories/GHSA-x768-8642-mmq9
- github.com/MobSF/Mobile-Security-Framework-MobSF/pull/2627
- github.com/MobSF/Mobile-Security-Framework-MobSF/commit/62563ca429a75b3e5d47a13b958e1d2e7d5e2bbf
- github.com/MobSF/Mobile-Security-Framework-MobSF
- github.com/MobSF/Mobile-Security-Framework-MobSF/releases/tag/v4.5.1