CVE-2026-111918

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Source
https://cve.org/CVERecord?id=CVE-2026-111918
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111918.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-111918
Aliases
Published
2026-10-17T18:46:33Z
Modified
2026-10-20T02:30:40Z
Severity
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
Vikunja 1.0.0-rc0 before 2.7.0 Cross-Tenant Task Position Writes via Saved Filter Creation
Details

Vikunja from 1.0.0-rc0 before 2.7.0 contains an improper authorization vulnerability in RecalculateTaskPositions that allows authenticated users with zero accessible projects to write task_positions rows for all tasks instance-wide. Attackers can delete their Inbox after repointing default_project_id, then create empty-filter saved filters to persist cross-tenant references and amplify writes for denial of service.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-863"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111918.json"
}
References

Affected packages

Git / github.com/go-vikunja/vikunja

Affected ranges

Type
GIT
Repo
https://github.com/go-vikunja/vikunja
Events
Introduced
0a7cc2b7df2d837ae295c748d1e9bf7f1a03dfd5
Fixed
a16be96aa454671fdf213b0fbe411dd38a098418
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "1.0.0-rc0"
        },
        {
            "fixed":  "2.7.0"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v1.*
v1.0.0
v1.0.0-rc0
v1.0.0-rc1
v1.0.0-rc2
v1.0.0-rc3
v1.0.0-rc4
v1.1.0
v2.*
v2.0.0
v2.1.0
v2.2.0
v2.2.1
v2.2.2
v2.3.0
v2.4.0
v2.5.0
v2.6.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111918.json"