TI-2026-13953 Aliases CVE-2026-16764 GHSA-43fx-4mqw-qphw

OWASP DefectDojo API/Web serializers.py UserSerializer privileges management

LOW 24CWE-266Published 2026-07-23 · Updated 2026-07-24

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Privilege escalation
Confidentiality · integrity · availability: Low · Low · Low
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-266.

Summary

A vulnerability was identified in OWASP DefectDojo 2.59.0. This issue affects the function UserSerializer of the file dojo/api_v2/serializers.py of the component API/Web. Such manipulation of the argument is_staff leads to improper privilege management. The attack may be performed from remote. The exploit is publicly available and might be used. Upgrading to version 2.58.3 and 3.0.0 is capable of addressing this issue. The name of the patch is 68a272f299d096249fd3ba9c2676bf69012857bf. It is advisable to upgrade the affected component. 2.59.0 was not intended to be released and has been removed.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00407 35th percentileScored 2026-11-07

Fix Fixed DefectDojo (OWASP): 2.58.3, 3.0.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
owasp-modsecurity	DefectDojo	2.59.0	2.58.3, 3.0.0	Patch available	CNA

DefectDojo Vendorowasp-modsecurity Affected 2.59.0 Fixed in 2.58.3, 3.0.0 Patch available CNA

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:owasp:defectdojo::::::::	—	—	owasp-modsecurity

cpe:2.3:a:owasp:defectdojo:*:*:*:*:*:*:*:* Versions — — ·owasp-modsecurity

Remediation

Fix · CNA DefectDojo (OWASP) Fixed in 2.58.3, 3.0.0

Timeline

2026-10-02 Threatist record created from CVE-2026-16764
2026-10-03 Alias added: GHSA-43fx-4mqw-qphw

References

Patch 3

Other 1

https://github.com/DefectDojo/django-DefectDojo/security/advisories/GHSA-w2j3-x3j3-mm43

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Sources

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