Medium · CVSS 5.3CVE-2026-111918

Vikunja 1.0.0-rc0 before 2.7.0 Cross-Tenant Task Position Writes via Saved Filter CreationCVE-2026-111918

Answer in brief

CVE-2026-111918 records a Medium severity (CVSS 5.3) vulnerability in Vikunja 1.0.0-rc0 before 2.7.0 Cross-Tenant Task Position Writes via Saved Filter Creation. The current sources do not mark it as known exploited. The current feed maps go-vikunja/vikunja (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 17, 2026Updated Oct 17, 2026Source checked Oct 17, 2026First seen by HOL Oct 17, 2026Material review Oct 17, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps go-vikunja/vikunja (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
go-vikunja/vikunjageneric	>=1.0.0-rc0 <2.7.0	2.7.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for go-vikunja/vikunja.
Review the reported fix. Update go-vikunja/vikunja to 2.7.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 17, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.