67 results · Feed
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Medium 6.3
Vikunja 2.2.0 before 2.7.0 Permissive CORS Policy Trusting Localhost Origins
Vikunja from 2.2.0 before 2.7.0 contains a permissive CORS configuration that trusts every localhost and 127.0.0.1 port with credentials, even when service.publicurl is set. Attackers controlling a page on any localhost port can send a credentialed request to…
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Medium 5.4
Vikunja 0.13.0 before 2.7.0 Incorrect Authorization in Link Share Deletion
Vikunja 0.13.0 before 2.7.0 contains an incorrect authorization vulnerability that allows project members with Write permission to delete admin-tier link shares because the delete permission check reads an unloaded share object. Attackers can send DELETE requ…
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Medium 4.3
Vikunja 2.6.0 Broken Access Control via Inherited Project Permissions
Vikunja 2.6.0 contains a broken access control flaw in getProjectAccessForUser (pkg/models/project_access.go), which resolves a user's effective project permission as the maximum over the project tree, silently overriding explicit lower-permission shares on s…
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Medium 6.5
Vikunja 0.22.0 before 2.7.0 Improper Access Revocation via Webhooks
Vikunja 0.22.0 before 2.7.0 contains an improper access revocation vulnerability that allows removed collaborators to keep receiving project data through webhooks they created. Former collaborators keep receiving task titles and descriptions through their web…
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Medium 5.4
Vikunja 1.0.0-rc0 before 2.7.0 Cross-Tenant Task Position Writes via Saved Filter Creation
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…
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Medium 6.5
Vikunja 2.3.0 before 2.7.0 WebSocket Authentication Ignores Session Revocation
Vikunja 2.3.0 before 2.7.0 contains an improper session validation vulnerability that allows attackers to keep WebSocket access after revocation because handleAuth never checks the JWT sid claim against the sessions table. Attackers holding a stolen access to…
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Low —
Vikunja: Task relation deletion does not check read access to the other task, allowing cross-project relation removal
## Summary Deleting a task relation only requires write access on the base task. Unlike relation creation, it does not verify that the caller can read the other task. A user with write access to one project can therefore delete relations whose other end lives…
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Medium —
Vikunja: Assignee email addresses disclosed to read-only project members via the task assignees endpoint
### Summary `TaskAssginee.ReadAll` returns assignee user objects without blanking the `Email` field, disclosing assignee email addresses to any read-only project member. Every sibling path that returns user objects obfuscates the email; this one does not. ###…
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Medium —
Vikunja: Cross-project task disclosure through subtask expansion
### Summary Vikunja lets a task in one project have a subtask that lives in a different project. When listing a project's tasks, an option pulls in those subtasks (?expand%5B%5D=subtasks). The main listing is correctly filtered to the projects the caller can …
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Medium —
Vikunja: CalDAV relation creation bypasses TaskRelation.CanCreate, allowing an unauthorized write into any task by known UID
### Summary Creating a task relation over CalDAV does not run the `TaskRelation.CanCreate` permission check that the REST API enforces. An attacker can attach a relation to any task whose UID they know, including tasks in projects they have no access to. The …
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High 8.1
Vikunja: Plaintext storage of password-reset/email-confirm tokens in database enables account takeover on DB read access
Vikunja is an open-source self-hosted task management platform. Versions prior to 2.4.0 store password-reset, email-confirmation, and account-deletion tokens in the `user_tokens` table in plaintext. If an attacker gains read access to the database through a b…
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High 7.5
Vikunja: OIDC email-fallback account linking ignores email_verified, enabling local-account takeover
Vikunja is an open-source self-hosted task management platform. In versions 1.0.0 through 2.3.0, when an administrator enables the per-provider `emailfallback` option on an OpenID Connect provider, Vikunja links an SSO login to a pre-existing local (username+…
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High 8.1
Vikunja: Scoped API token can mint unrestricted OAuth session credentials
Vikunja is an open-source self-hosted task management platform. In version 2.3.0, a scoped API token limited to the `oauth.authorize` permission can call `POST /api/v1/oauth/authorize`, obtain an OAuth authorization code, and exchange the code at `POST /api/v…
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High 7.5
Vikunja before 2.6.0 Privilege Escalation via Link Share Hash
Vikunja before 2.6.0 fails to properly restrict access to the link-share hash field in single-share read endpoints, allowing read-only members to obtain the share's secret credential. Attackers can exchange the disclosed hash for a link-share JWT at the share…
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Medium 4.3
Vikunja before 2.6.0 Broken Object-Level Authorization via task-position
Vikunja before 2.6.0 fails to validate that user-supplied project_view_id in task-position requests belongs to the task's project. Authenticated attackers can insert task position rows into arbitrary other tenant project views via POST or PUT task-position en…
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Medium 4.3
Vikunja before 2.6.0 API Token Scope Bypass via expand Parameter
Vikunja before 2.6.0 contains an API token scope bypass vulnerability in task read endpoints where authorization fails to inspect query string parameters. Attackers with limited token scopes can use the expand parameter to access restricted data like comments…
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Medium 4.3
Vikunja before 2.6.0 TOTP Secret Disclosure via API
Vikunja before 2.6.0 continues to expose the raw TOTP shared secret after enrollment through the GET /api/v1/user/settings/totp and /api/v1/user/settings/totp/qrcode endpoints without re-authentication. Attackers with a valid access token can read the secret,…
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Medium 4.3
Vikunja before 2.6.0 User Enumeration via v2 API
Vikunja versions before 2.6.0 fail to properly validate link-share tokens in the v2 API user search endpoints. Attackers with a read-only share link can enumerate project users via the projects endpoint and confirm arbitrary usernames exist via the global sea…
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Medium 6.5
Vikunja before 2.6.0 Denial of Service via Decompression Bomb
Vikunja before 2.6.0 fails to limit archive expansion during data import, allowing authenticated users to cause denial of service. Attackers can upload highly compressed files that expand to tens of gigabytes in memory and disk, exhausting server resources an…
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Medium 4.3
vikunja before 2.6.0 Team Enumeration via Project Share
vikunja before 2.6.0 fails to validate team access when attaching teams to projects, allowing authenticated users to enumerate all teams and members. Attackers can attach arbitrary team IDs via the project teams endpoint to retrieve complete team rosters incl…
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High 7.5
Vikunja before 2.6.0 Authentication Bypass via CalDAV BasicAuth
Vikunja before 2.6.0 contains an authentication bypass vulnerability in CalDAV BasicAuth endpoints that lack rate limiting protection. Remote unauthenticated attackers can issue unbounded credential-guessing requests against /dav, /.well-known, and /feeds rou…
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Medium 6.5
Vikunja before 2.6.0 Denial of Service via Avatar Upload
Vikunja before 2.6.0 fails to apply pixel decode limits to avatar and project-background upload endpoints, allowing authenticated users to upload crafted images that decode to excessive pixel counts. Attackers can upload small images with extreme aspect ratio…
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High 7.5
Vikunja before 2.6.0 Authentication Bypass via Unthrottled API
Vikunja versions before 2.6.0 fail to apply rate limiting to /api/v2 public authentication endpoints including login, register, password-reset, and OAuth token routes. Remote unauthenticated attackers can perform unbounded credential guessing, account enumera…
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Medium 6.5
Vikunja before 2.6.0 Resource Exhaustion via Planka Migration
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 server…
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Medium 6.5
vikunja before 2.6.0 Resource Exhaustion via CSV Migration
vikunja versions before 2.6.0 contain a resource exhaustion vulnerability in the POST /api/v2/migration/csv/migrate endpoint that fails to limit parsed row cardinality. Authenticated attackers can upload multipart CSV files with millions of tiny records to ex…
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Medium 6.5
vikunja before 2.6.0 Denial of Service via unbounded filter recursion
vikunja versions before 2.6.0 contain a resource exhaustion vulnerability in the task-filter endpoint that accepts deeply nested filter expressions without recursion depth limits. Authenticated attackers can supply thousands of nested parentheses in the filte…
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Medium 5.0
Vikunja: Authenticated cross-tenant kanban-bucket relocation via `project_view_id` mass-assignment
Vikunja is an open-source self-hosted task management platform. Prior to 2.4.0, POST /api/v1/projects/{project}/views/{view}/buckets/{bucket} allows the request body project_view_id value to be mass assigned by Bucket.Update in pkg/models/kanban.go. The permi…
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High 7.1
Vikunja: Cross-tenant IDOR in kanban move-task endpoint via unauthorized body task_id
Vikunja is an open-source self-hosted task management platform. Prior to 2.4.0, POST /api/v1/projects/{project}/views/{view}/buckets/{bucket}/tasks accepts a body supplied task_id but TaskBucket.CanUpdate in pkg/models/kanban_task_bucket.go authorizes only th…
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High 8.1
Vikunja: Improper Authorization and Authorization Bypass Through User-Controlled Key in code.vikunja.io/api
Vikunja is an open-source self-hosted task management platform. From 0.24.6 until 2.4.0, DELETE /api/v1/projects/:project/views/:view permits an authenticated user to supply a view identifier from another project while authorizing only against an attacker-con…
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Medium 4.3
Vikunja incomplete fix for CVE-2026-35595: Write-only user can detach shared project from parent hierarchy via parent_project_id=0
Vikunja is an open-source self-hosted task management platform. From 2.3.0 until 2.4.0, a user with Write but not Admin permission on a shared child project can detach it from its parent hierarchy by submitting parent_project_id equal to 0 to POST /api/v1/pro…
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Medium 5.3
Vikunja: Project duplication bypasses write-permission check on the target parent project
Vikunja is an open-source self-hosted task management platform. From 0.21.0 until 2.4.0, the project duplication operation in pkg/models/project_duplicate.go allows an authenticated user who can read a source project to place its duplicate beneath an arbitrar…
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High 7.5
Vikunja through 2.4.0 Principal-Type Confusion via LinkSharing
Vikunja through 2.4.0 contains a principal-type confusion vulnerability where LinkSharing principals with id N are treated as user principals with users.id == N at three permission checks lacking type guards. Attackers with a link-share JWT can remove victims…
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Medium 6.5CVE-2026-68582 Public exploit
Vikunja 0.24.0 Broken Object Level Authorization via Link-Share Token
Vikunja versions >= 0.24.0 and <= 2.3.0 contain a broken object level authorization (BOLA) vulnerability in the task-collection endpoint (GET /api/v1/projects/{project}/views/{view}/tasks). The endpoint loads the requested project view from the URL path witho…
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High 8.1
Vikunja 0.22.0 through 2.3.0 Authentication Bypass via Principal ID Collision
Vikunja versions 0.22.0 through 2.3.0 fail to validate the principal type in API token management. Because user IDs and link-share IDs are independent numeric sequences and both resolve through a generic web.Auth.GetID() interface, a link-share JWT whose nume…
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Critical 9.8
Vikunja - Unauthenticated Instance-Wide Data Breach via Link Share Hash Disclosure Chained with Cross-Project Attachment IDOR
Vikunja before 2.2.1 contains an authorization flaw where the LinkSharing.ReadAll endpoint exposes share hashes to users with read access, enabling permission escalation to admin-level shares. The GetTaskAttachment endpoint performs permission checks against …
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Medium 4.3
Vikunja's Scoped API tokens with projects.background permission can delete project backgrounds
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, Vikunja's scoped API token enforcement for custom project background routes is method-confused. A token with only projects.background can successfully delete a project background,…
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Medium 5.4
Vikunja has a File Size Limit Bypass via Vikunja Import
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 th…
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Medium 4.1
Vikunja has an iCalendar Property Injection via CRLF in CalDAV Task Output
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the CalDAV output generator builds iCalendar VTODO entries via raw string concatenation without applying RFC 5545 TEXT value escaping. User-controlled task titles containing CRLF …
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Medium 5.4
Vikunja has HTML Injection via Task Titles in Overdue Email Notifications
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, task titles are embedded directly into Markdown link syntax in overdue email notifications without escaping Markdown special characters. When rendered by goldmark and sanitized by…
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Medium 6.5
Vikunja has an Algorithmic Complexity DoS in Repeating Task Handler
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the addRepeatIntervalToTime function uses an O(n) loop that advances a date by the task's RepeatAfter duration until it exceeds the current time. By creating a repeating task with…