Information Disclosure in Vikunja by VIkunja Team Through Self-Removal Endpoint
CVE-2026-123517

7.1HIGH

Key Information:

Vendor

Go-vikunja

Status
Vikunja
Vendor
CVE Published:
8 November 2026

What is CVE-2026-123517?

Vikunja versions prior to 2.7.1 contain an information disclosure vulnerability that can be exploited by authenticated users. By making DELETE requests to the team member self-removal endpoint, attackers can discern the existence of private teams. The responses generated for different scenarios can inadvertently reveal whether a team is present, if it utilizes SSO management, or if it contains a single member, thus compromising user privacy and security.

Affected Version(s)

vikunja 0 < 2.7.1

vikunja 2.7.1

References

https://github.com/go-vikunja/vikunja/security/advisories...
vendor-advisory
https://www.vulncheck.com/advisories/vikunja-before-2.7.1...
third-party-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.