CVE-2026-86493
In JetBrains YouTrack before 2026.2.18634 improper permission checks allowed read-only users to create and modify whiteboard cards
CVSS
6.5
Medium
EPSS
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KEV
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Exploit Today
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0-100
Published: Sep 7, 2026 · Last modified: Sep 7, 2026 · CWE-863
Not enough EPSS history yet.
In JetBrains YouTrack before 2026.2.18634 improper permission checks allowed read-only users to create and modify whiteboard cards
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-864987.7 HIG—
———In JetBrains YouTrack before 2025.3.160480,
2026.1.14047 pUT requests on link sub-resources allowed modification linked entities without update permission4hCVE-2026-864906.5 MED—
———In JetBrains YouTrack before 2026.2.18634 improper permission checks allowed overwriting of bundled apps via the app import endpoint4hCVE-2026-864873.1 LOW—
———In JetBrains YouTrack before 2026.2.18634 a crafted WebSocket message allowed read-only whiteboard users to modify canvas content4hCVE-2026-765607.5 HIG—
———A flaw was found in 389 Directory Server. The SELFDN ACI bind-rule evaluator incorrectly matches an anonymous LDAP client's empty bind DN against an empty stored attribute value, allowing an unauthenticated client to satisfy access control checks intended to require a matching authenticated identity. This can allow an anonymous LDAP client to perform an operation, such as adding or modifying a directory entry, that a SELFDN-based ACI intended to restrict to a specific authenticated user.7hCVE-2026-84173——
——0In Eclipse Ankaios versions v0.5.1 through v1.0.1, the agent-side Control Interface authorizer incorrectly evaluates multi-segment allow rules whose first path segment is a wildcard. An authenticated workload with access restricted by such a rule can submit a CompleteStateRequest or UpdateStateRequest with an empty field mask. The request may then be incorrectly authorized as matching the scoped rule, allowing the workload to read the complete cluster state or replace state outside its authorized subtree. This may result in unauthorized disclosure or modification of other workloads and cluster configuration. Only a rule consisting solely of * is intended to authorize an empty mask.
Mitigation: Until an update containing the fix is installed, avoid multi-segment Control Interface allow-rule filter masks that begin with a wildcard, such as *.workloads.some_workload. Replace them with explicit paths such as desiredState.workloads.some_workload, where applicable. A filter mask consisting solely of * has different, intentionally unrestricted semantics and should only be used when full-state access is intended.11hCVE-2026-862745.3 MED—
——0A security vulnerability has been detected in projeto-siga siga up to 11.0.2.10/11.0.2.13/11.1.1. This affects the function ExAutenticacaoController.autenticar of the file sigaex/src/main/java/br/gov/jfrj/siga/vraptor/ExAutenticacaoController.java of the component Authentication Flow. Such manipulation of the argument cod/jwt leads to missing authorization. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.15h