Cross-site Scripting (XSS)

Overview Affected versions of this package are vulnerable to Cross-site Scripting XSS via the authorize.html process. An attacker can execute arbitrary JavaScript in a user's browser by tricking the user into visiting a specially crafted URL, which can result in the exfiltration of session tokens...

Yamcs has Reflected XSS in the URL of the Authorize Endpoint

Attack type: Unauthenticated remote Impact: Attackers can execute arbitrary JavaScript in a user's browser, including obtaining a user's session token and refresh token. Affected components: authorize.html, AuthHandler.java, HandlerContext.java A Reflected Cross-Site Scripting vulnerability...

GHSA-RXPG-WJF8-QV9C Yamcs has Reflected XSS in the URL of the Authorize Endpoint

Attack type: Unauthenticated remote Impact: Attackers can execute arbitrary JavaScript in a user's browser, including obtaining a user's session token and refresh token. Affected components: authorize.html, AuthHandler.java, HandlerContext.java A Reflected Cross-Site Scripting vulnerability...

CVE-2026-55549 Yamcs: Reflected XSS in the URL of the Authorize Endpoint

Yamcs is a mission control framework. Prior to 5.9.4, Yamcs reflects an attacker-controlled redirecturi parameter from GET /auth/authorize into yamcs-core/src/main/resources/auth/templates/authorize.html without adequate HTML escaping by yamcs-core/src/main/java/org/yamcs/http/auth/AuthHandler.ja...

EUVD-2026-67841

Yamcs is a mission control framework. Prior to 5.9.4, Yamcs reflects an attacker-controlled redirecturi parameter from GET /auth/authorize into yamcs-core/src/main/resources/auth/templates/authorize.html without adequate HTML escaping by yamcs-core/src/main/java/org/yamcs/http/auth/AuthHandler.ja...

CVE-2026-55549 Yamcs: Reflected XSS in the URL of the Authorize Endpoint

Yamcs is a mission control framework. Prior to 5.9.4, Yamcs reflects an attacker-controlled redirecturi parameter from GET /auth/authorize into yamcs-core/src/main/resources/auth/templates/authorize.html without adequate HTML escaping by yamcs-core/src/main/java/org/yamcs/http/auth/AuthHandler.ja...

CVE-2026-55549 Yamcs: Reflected XSS in the URL of the Authorize Endpoint

Yamcs is a mission control framework. Prior to 5.9.4, Yamcs reflects an attacker-controlled redirecturi parameter from GET /auth/authorize into yamcs-core/src/main/resources/auth/templates/authorize.html without adequate HTML escaping by yamcs-core/src/main/java/org/yamcs/http/auth/AuthHandler.ja...

CVE-2026-55549

Yamcs , an open-source mission control framework, is vulnerable to reflected cross-site scripting (XSS) in the redirect_uri parameter of the GET /auth/authorize endpoint. The parameter is reflected into authorize.html without adequate HTML escaping by AuthHandler.java and HandlerContext.java , al...

GHSA-8XJQ-PR36-CCGF Yamcs: Insecure Direct Object Reference (IDOR) in PacketsApi allows unprivileged users to dump all telemetry packets

Summary The PacketsApi.exportPackets endpoint in Yamcs fails to properly enforce object-level privileges ReadPacket when an API request omits specific packet names. As a result, an attacker with a low-privileged account or any authenticated user with zero privileges can dump the entire archive of...

Yamcs: Insecure Direct Object Reference (IDOR) in PacketsApi allows unprivileged users to dump all telemetry packets

Summary The PacketsApi.exportPackets endpoint in Yamcs fails to properly enforce object-level privileges ReadPacket when an API request omits specific packet names. As a result, an attacker with a low-privileged account or any authenticated user with zero privileges can dump the entire archive of...

Attackers Chain Two PaperCut Flaws to Execute Code Without Authentication

Malicious actors are exploiting a newly patched security flaw in PaperCut NG and MF to execute arbitrary code on susceptible instances, as the company released a fresh emergency fix with additional hardening. "This vulnerability gives an unauthenticated attacker remote control over PaperCut's...

GHSA-962X-CCWF-8X6P Yamcs Core API has Multiple Missing Function Level Access Control vulnerabilities

Summary Multiple Missing Function Level Access Control vulnerabilities exist in the Yamcs Core API. These vulnerabilities allow any authenticated user, regardless of their assigned roles or privileges e.g., an unprivileged "Guest", to bypass intended access controls. An attacker can exploit these...

Yamcs Core API has Multiple Missing Function Level Access Control vulnerabilities

Summary Multiple Missing Function Level Access Control vulnerabilities exist in the Yamcs Core API. These vulnerabilities allow any authenticated user, regardless of their assigned roles or privileges e.g., an unprivileged "Guest", to bypass intended access controls. An attacker can exploit these...

Vikunja has cross-tenant IDOR in kanban move-task endpoint via unauthorized body task_id

Summary The kanban endpoint POST /api/v1/projects/project/views/view/buckets/bucket/tasks moves a task into a bucket. The task is identified by taskid in the request body. The endpoint's authorization check TaskBucket.CanUpdate only verifies that the caller may update the project/view/bucket name...

GHSA-5PG6-M483-7VRG Vikunja has cross-tenant IDOR in kanban move-task endpoint via unauthorized body task_id

Summary The kanban endpoint POST /api/v1/projects/project/views/view/buckets/bucket/tasks moves a task into a bucket. The task is identified by taskid in the request body. The endpoint's authorization check TaskBucket.CanUpdate only verifies that the caller may update the project/view/bucket name...

Vikunja vulnerable to Improper Authorization and Authorization Bypass Through User-Controlled Key

Summary A user with only a single self-owned project can permanently destroy the Kanban bucket assignments taskbuckets and task ordering taskpositions of any other project view in the entire instance. The ProjectView.Delete model method runs three SQL statements: the first is properly scoped to...

GHSA-GG93-X632-9CCV Vikunja vulnerable to Improper Authorization and Authorization Bypass Through User-Controlled Key

Summary A user with only a single self-owned project can permanently destroy the Kanban bucket assignments taskbuckets and task ordering taskpositions of any other project view in the entire instance. The ProjectView.Delete model method runs three SQL statements: the first is properly scoped to...

SUSE CVE-2026-72111

In the Linux kernel, the following vulnerability has been resolved: bpf: Reset register bounds before narrowing retval range in checkmemaccess When the BPF verifier processes a context load of an LSM hook return value, it calls markregs32range to narrow the register to the hook's valid range...

CVE-2026-55065 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-controlled project identifier...

CVE-2026-55065 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-controlled project identifier...