CVE-2026-91970: Allocation of Resources Without Limits or Throttling in go-vikunja vikunja
Vikunja versions before 2.6.0 contain a resource exhaustion vulnerability in the Planka migrator that fails to enforce aggregate memory budgets during migration jobs. Authenticated attackers can submit migration requests pointing to attacker-controlled servers advertising numerous size-compliant attachments, exhausting worker memory and causing denial of service for all users.
AI Analysis
Technical Summary
CVE-2026-91970 describes a resource exhaustion vulnerability in the go-vikunja vikunja project, specifically in the Planka migrator. The vulnerability arises because the migrator does not enforce aggregate memory budgets during migration jobs. An authenticated attacker can exploit this by submitting migration requests that point to attacker-controlled servers advertising numerous attachments that comply with size limits. This causes worker memory exhaustion and results in denial of service conditions affecting all users of the service.
Potential Impact
The vulnerability allows an authenticated attacker to cause denial of service by exhausting worker memory resources during migration jobs. There is no impact on confidentiality or integrity reported. The denial of service affects availability for all users of the affected Vikunja service.
Mitigation Recommendations
A fix is available in Vikunja version 2.6.0 and later. Users should upgrade to version 2.6.0 or newer to remediate this vulnerability. No other mitigation guidance is provided.
CVE-2026-91970: Allocation of Resources Without Limits or Throttling in go-vikunja vikunja
Description
Vikunja versions before 2.6.0 contain a resource exhaustion vulnerability in the Planka migrator that fails to enforce aggregate memory budgets during migration jobs. Authenticated attackers can submit migration requests pointing to attacker-controlled servers advertising numerous size-compliant attachments, exhausting worker memory and causing denial of service for all users.
CVSS v3.1
Score 6.5medium
Affected software
go-vikunja
vikunja
pkg:golang/github.com/go-vikunja/vikunjaRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-91970 describes a resource exhaustion vulnerability in the go-vikunja vikunja project, specifically in the Planka migrator. The vulnerability arises because the migrator does not enforce aggregate memory budgets during migration jobs. An authenticated attacker can exploit this by submitting migration requests that point to attacker-controlled servers advertising numerous attachments that comply with size limits. This causes worker memory exhaustion and results in denial of service conditions affecting all users of the service.
Potential Impact
The vulnerability allows an authenticated attacker to cause denial of service by exhausting worker memory resources during migration jobs. There is no impact on confidentiality or integrity reported. The denial of service affects availability for all users of the affected Vikunja service.
Mitigation Recommendations
A fix is available in Vikunja version 2.6.0 and later. Users should upgrade to version 2.6.0 or newer to remediate this vulnerability. No other mitigation guidance is provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-15T11:09:54.873Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa9651c55bf5e2cf502eb23
Added to database: 09/15/2026, 15:32:44 UTC
Last enriched: 09/15/2026, 15:47:40 UTC
Last updated: 09/16/2026, 02:32:27 UTC
Views: 8
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.