CVE-2026-33312 | vikunja up to 2.1.x background authorization (GHSA-564f-wx8x-878h / EUVD-2026-13708)

VDB-352089 · CVE-2026-33312 · GHSA-564F-WX8X-878H VIKUNJA UP TO 2.1.X BACKGROUND AUTHORIZATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.1 $0-$5k 2.30 Summaryinfo A vulnerability has been found in vikunja up to 2.1.x and classified as problematic. Affected by this issue is some unknown functionality of the file /api/v1/projects/:project/background. Performing a manipulation results in authorization. This vulnerability is cataloged as CVE-2026-33312. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded. Detailsinfo A vulnerability classified as problematic has been found in vikunja up to 2.1.x. This affects an unknown part of the file /api/v1/projects/:project/background. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. This is going to have an impact on integrity. The summary by CVE is: Vikunja is an open-source self-hosted task management platform. Starting in version 0.20.2 and prior to version 2.2.0, the `DELETE /api/v1/projects/:project/background` endpoint checks `CanRead` permission instead of `CanUpdate`, allowing any user with read-only access to a project to permanently delete its background image. Version 2.2.0 fixes the issue. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-33312 since 03/18/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. Upgrading to version 2.2.0 eliminates this vulnerability. The upgrade is hosted for download at vikunja.io. The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-13708). Productinfo Name vikunja Version 2.0 2.1 CPE 2.3info 🔒 🔒 CPE 2.2info 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 4.3 VulDB Meta Temp Score: 4.1 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Authorization CWE: CWE-863 / CWE-285 / CWE-266 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: vikunja 2.2.0 Timelineinfo 03/18/2026 CVE reserved 03/20/2026 +2 days Advisory disclosed 03/20/2026 +0 days VulDB entry created 03/20/2026 +0 days VulDB entry last update Sourcesinfo Advisory: GHSA-564f-wx8x-878h Status: Confirmed CVE: CVE-2026-33312 (🔒) GCVE (CVE): GCVE-0-2026-33312 GCVE (VulDB): GCVE-100-352089 EUVD: 🔒 Entryinfo Created: 03/20/2026 17:27 Updated: 03/20/2026 17:39 Changes: 03/20/2026 17:27 (67), 03/20/2026 17:39 (1) Complete: 🔍 Cache ID: 99:BCC:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸