CVE-2026-35602: CWE-770: Allocation of Resources Without Limits or Throttling in go-vikunja vikunja
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the Vikunja file import endpoint uses the attacker-controlled Size field from the JSON metadata inside the import zip instead of the actual decompressed file content length for the file size enforcement check. By setting Size to 0 in the JSON while including large compressed file entries in the zip, an attacker bypasses the configured maximum file size limit. This vulnerability is fixed in 2.3.0.
AI Analysis
Technical Summary
CVE-2026-35602 is a resource allocation vulnerability (CWE-770) in the open-source task management platform Vikunja. Before version 2.3.0, the file import endpoint relies on the Size field from JSON metadata inside an import zip file to enforce file size limits. An attacker can set this Size field to 0 while including large compressed files, effectively bypassing the size restriction and potentially causing resource exhaustion. This vulnerability has a CVSS 3.1 base score of 5.4 (medium severity) and does not impact confidentiality but can affect integrity and availability.
Potential Impact
Exploitation allows attackers with at least low privileges to bypass file size restrictions during import, potentially leading to resource exhaustion or denial of service conditions. There is no direct confidentiality impact, but integrity and availability may be affected due to uncontrolled resource allocation.
Mitigation Recommendations
This vulnerability is fixed in Vikunja version 2.3.0. Users should upgrade to version 2.3.0 or later to remediate this issue. No official patch or temporary fix is indicated other than upgrading. Since this is not a cloud service, remediation depends on applying the vendor fix.
CVE-2026-35602: CWE-770: Allocation of Resources Without Limits or Throttling in go-vikunja vikunja
Description
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the Vikunja file import endpoint uses the attacker-controlled Size field from the JSON metadata inside the import zip instead of the actual decompressed file content length for the file size enforcement check. By setting Size to 0 in the JSON while including large compressed file entries in the zip, an attacker bypasses the configured maximum file size limit. This vulnerability is fixed in 2.3.0.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-35602 is a resource allocation vulnerability (CWE-770) in the open-source task management platform Vikunja. Before version 2.3.0, the file import endpoint relies on the Size field from JSON metadata inside an import zip file to enforce file size limits. An attacker can set this Size field to 0 while including large compressed files, effectively bypassing the size restriction and potentially causing resource exhaustion. This vulnerability has a CVSS 3.1 base score of 5.4 (medium severity) and does not impact confidentiality but can affect integrity and availability.
Potential Impact
Exploitation allows attackers with at least low privileges to bypass file size restrictions during import, potentially leading to resource exhaustion or denial of service conditions. There is no direct confidentiality impact, but integrity and availability may be affected due to uncontrolled resource allocation.
Mitigation Recommendations
This vulnerability is fixed in Vikunja version 2.3.0. Users should upgrade to version 2.3.0 or later to remediate this issue. No official patch or temporary fix is indicated other than upgrading. Since this is not a cloud service, remediation depends on applying the vendor fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-03T21:25:12.162Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d9d9751cc7ad14da3f8740
Added to database: 4/11/2026, 5:17:41 AM
Last enriched: 4/11/2026, 5:19:53 AM
Last updated: 4/11/2026, 3:17:14 PM
Views: 9
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.