SEPTEMBER 17, 2026
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Case File

CVE-2026-91980

MEDIUM · CVSS 4.3 EPSS 0.27% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-15 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

Vikunja versions prior to 2.6.0 are vulnerable due to inadequate validation of team access when linking teams to projects, enabling authenticated users to enumerate all teams and their members. This flaw allows attackers to exploit the project teams endpoint to attach arbitrary team IDs, potentially exposing sensitive information such as member names and admin privileges. Organizations using Vikunja should prioritize this vulnerability to prevent unauthorized access to team data.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-91980
Severity
MEDIUM
CVSS
4.3
EPSS
0.27%

Original NVD Description

vikunja before 2.6.0 fails to validate team access when attaching teams to projects, allowing authenticated users to enumerate all teams and members. Attackers can attach arbitrary team IDs via the project teams endpoint to retrieve complete team rosters including member names and admin flags for unauthorized teams.