Vikunja
Monthly
Vikunja prior to version 2.3.0 fails to validate link share permissions against server state during JWT authentication, allowing attackers with revoked or downgraded JWT tokens to maintain the original access level for up to 72 hours. This affects self-hosted task management deployments where link shares are used for collaboration, enabling unauthorized information disclosure and modification of shared projects even after a project owner explicitly revokes or restricts access.
Authentication bypass in Vikunja task management platform allows unauthenticated attackers to circumvent two-factor authentication when OIDC email-based user matching is enabled. The OIDC callback handler issues complete JWT tokens without validating TOTP enrollment status, enabling full account access to users with configured TOTP protection when matched through OIDC email fallback. Affects versions prior to 2.3.0. No public exploit identified at time of analysis.
The Vikunja Desktop Electron application fails to validate or allowlist URI schemes before passing URLs from window.open() calls to shell.openExternal(), allowing attackers to invoke arbitrary local applications, open files, or trigger custom protocol handlers. Vikunja versions 0.21.0 through 2.1.x are affected, with the vulnerability patched in version 2.2.0. An attacker who can inject links with target="_blank" into user-generated content can exploit this to execute malicious actions on the victim's operating system without user awareness or explicit consent.
Business logic vulnerability in Vikunja task management platform before 2.1.0 allows incomplete resource cleanup, potentially enabling unauthorized access to shared resources after user removal.
Vikunja before version 2.0.0 contains a path traversal vulnerability in its backup restoration function that fails to validate file paths in ZIP archives, allowing attackers with high privileges to write arbitrary files to the host system. Public exploit code exists for this vulnerability, and malformed archives can trigger a denial of service that permanently wipes the database before crashing the application. The flaw affects Vikunja and the underlying Go platform, with no patch currently available.
Stored cross-site scripting (XSS) in Vikunja prior to version 2.0.0 allows authenticated attackers to steal authentication tokens by uploading malicious SVG files containing JavaScript that executes when accessed directly. The vulnerability exists because the application fails to sanitize SVG content before storage and renders it inline under the application origin, enabling token theft from localStorage. Public exploit code exists for this vulnerability and no patch is currently available for affected versions.
Weak password policy in Vikunja task management before 2.0.0 allows users to set trivially guessable passwords. PoC available.
Vikunja is an open-source self-hosted task management platform. [CVSS 6.1 MEDIUM]
Cross-site scripting (XSS) in Vikunja prior to version 1.1.0 allows authenticated attackers to execute arbitrary JavaScript in other users' browsers by injecting malicious code into task descriptions that are rendered without sanitization in hover tooltips. An attacker can exploit this by sharing a project and creating a specially crafted task that triggers the vulnerability when other users hover over it. A patch is available in version 1.1.0 and later.
Vikunja prior to version 2.3.0 fails to validate link share permissions against server state during JWT authentication, allowing attackers with revoked or downgraded JWT tokens to maintain the original access level for up to 72 hours. This affects self-hosted task management deployments where link shares are used for collaboration, enabling unauthorized information disclosure and modification of shared projects even after a project owner explicitly revokes or restricts access.
Authentication bypass in Vikunja task management platform allows unauthenticated attackers to circumvent two-factor authentication when OIDC email-based user matching is enabled. The OIDC callback handler issues complete JWT tokens without validating TOTP enrollment status, enabling full account access to users with configured TOTP protection when matched through OIDC email fallback. Affects versions prior to 2.3.0. No public exploit identified at time of analysis.
The Vikunja Desktop Electron application fails to validate or allowlist URI schemes before passing URLs from window.open() calls to shell.openExternal(), allowing attackers to invoke arbitrary local applications, open files, or trigger custom protocol handlers. Vikunja versions 0.21.0 through 2.1.x are affected, with the vulnerability patched in version 2.2.0. An attacker who can inject links with target="_blank" into user-generated content can exploit this to execute malicious actions on the victim's operating system without user awareness or explicit consent.
Business logic vulnerability in Vikunja task management platform before 2.1.0 allows incomplete resource cleanup, potentially enabling unauthorized access to shared resources after user removal.
Vikunja before version 2.0.0 contains a path traversal vulnerability in its backup restoration function that fails to validate file paths in ZIP archives, allowing attackers with high privileges to write arbitrary files to the host system. Public exploit code exists for this vulnerability, and malformed archives can trigger a denial of service that permanently wipes the database before crashing the application. The flaw affects Vikunja and the underlying Go platform, with no patch currently available.
Stored cross-site scripting (XSS) in Vikunja prior to version 2.0.0 allows authenticated attackers to steal authentication tokens by uploading malicious SVG files containing JavaScript that executes when accessed directly. The vulnerability exists because the application fails to sanitize SVG content before storage and renders it inline under the application origin, enabling token theft from localStorage. Public exploit code exists for this vulnerability and no patch is currently available for affected versions.
Weak password policy in Vikunja task management before 2.0.0 allows users to set trivially guessable passwords. PoC available.
Vikunja is an open-source self-hosted task management platform. [CVSS 6.1 MEDIUM]
Cross-site scripting (XSS) in Vikunja prior to version 1.1.0 allows authenticated attackers to execute arbitrary JavaScript in other users' browsers by injecting malicious code into task descriptions that are rendered without sanitization in hover tooltips. An attacker can exploit this by sharing a project and creating a specially crafted task that triggers the vulnerability when other users hover over it. A patch is available in version 1.1.0 and later.