EUVD-2026-87729

SiYuan before v3.8.4 contains an authentication bypass vulnerability in the publish service where session cookies are issued without Secure or SameSite attributes over plaintext HTTP connections. An on-path attacker can observe a valid publish-visitor-session-id cookie from a Basic Auth exchange...

SiYuan <= v3.6.1 - Bookmark Data Disclosure

SiYuan v3.6.2 contains an information disclosure vulnerability caused by improper authorization checks in the publish service's bookmark filtering, letting unauthenticated visitors access bookmarked blocks from password-protected documents, exploit requires access to the publish service. id:...

CVE-2026-85584

SiYuan versions before v3.8.2 contain a denial of service vulnerability in the publish-service Basic Auth throttle that stores failed-attempt state using attacker-controlled usernames without enforcing capacity limits or eviction policies. Unauthenticated attackers can submit repeated...

CVE-2026-85582

SiYuan versions before v3.8.2 contain an unbounded session creation vulnerability in the publish-service Basic Auth handler that allows authenticated attackers to exhaust memory. Attackers can repeatedly authenticate with valid credentials to create persistent session entries without expiry or...

EUVD-2026-71007

SiYuan versions before v3.8.2 contain a denial of service vulnerability in the publish-service Basic Auth throttle that stores failed-attempt state using attacker-controlled usernames without enforcing capacity limits or eviction policies. Unauthenticated attackers can submit repeated...

CVE-2026-85584 SiYuan before v3.8.2 Denial of Service via Auth Throttle

SiYuan versions before v3.8.2 contain a denial of service vulnerability in the publish-service Basic Auth throttle that stores failed-attempt state using attacker-controlled usernames without enforcing capacity limits or eviction policies. Unauthenticated attackers can submit repeated...

CVE-2026-85584 SiYuan before v3.8.2 Denial of Service via Auth Throttle

SiYuan versions before v3.8.2 contain a denial of service vulnerability in the publish-service Basic Auth throttle that stores failed-attempt state using attacker-controlled usernames without enforcing capacity limits or eviction policies. Unauthenticated attackers can submit repeated...

CVE-2026-85582 SiYuan before v3.8.2 Unbounded Session Creation via Basic Auth

SiYuan versions before v3.8.2 contain an unbounded session creation vulnerability in the publish-service Basic Auth handler that allows authenticated attackers to exhaust memory. Attackers can repeatedly authenticate with valid credentials to create persistent session entries without expiry or...

CVE-2026-85582 SiYuan before v3.8.2 Unbounded Session Creation via Basic Auth

SiYuan versions before v3.8.2 contain an unbounded session creation vulnerability in the publish-service Basic Auth handler that allows authenticated attackers to exhaust memory. Attackers can repeatedly authenticate with valid credentials to create persistent session entries without expiry or...

CVE-2026-85582 SiYuan before v3.8.2 Unbounded Session Creation via Basic Auth

SiYuan versions before v3.8.2 contain an unbounded session creation vulnerability in the publish-service Basic Auth handler that allows authenticated attackers to exhaust memory. Attackers can repeatedly authenticate with valid credentials to create persistent session entries without expiry or...

EUVD-2026-71005

SiYuan versions before v3.8.2 contain an unbounded session creation vulnerability in the publish-service Basic Auth handler that allows authenticated attackers to exhaust memory. Attackers can repeatedly authenticate with valid credentials to create persistent session entries without expiry or...

CVE-2026-85582

SiYuan versions before v3.8.2 contain an unbounded session creation vulnerability in the publish-service Basic Auth handler . Authenticated attackers can repeatedly authenticate with valid credentials to create persistent session entries without expiry or capacity limits, causing indefinite proce...

PT-2026-85482

SiYuan versions before v3.8.2 contain an unbounded session creation vulnerability in the publish-service Basic Auth handler that allows authenticated attackers to exhaust memory. Attackers can repeatedly authenticate with valid credentials to create persistent session entries without expiry or...

CVE-2026-85584: Allocation of Resources Without Limits or Throttling

SiYuan versions before v3.8.2 contain a denial of service vulnerability in the publish-service Basic Auth throttle that stores failed-attempt state using attacker-controlled usernames without enforcing capacity limits or eviction policies. Unauthenticated attackers can submit repeated...

PT-2026-85484

SiYuan versions before v3.8.2 contain a denial of service vulnerability in the publish-service Basic Auth throttle that stores failed-attempt state using attacker-controlled usernames without enforcing capacity limits or eviction policies. Unauthenticated attackers can submit repeated...

CVE-2026-85582: Allocation of Resources Without Limits or Throttling

SiYuan versions before v3.8.2 contain an unbounded session creation vulnerability in the publish-service Basic Auth handler that allows authenticated attackers to exhaust memory. Attackers can repeatedly authenticate with valid credentials to create persistent session entries without expiry or...

GHSA-H89Q-4J2H-7H88 SiYuan: SQL Query in Block Search Exposes Hidden Published Document Content

Summary Siyuan's block search endpoint concatenates attacker-controlled paths values into SQL predicates used by non-SQL search modes. Through Siyuan's publish service, an unauthenticated visitor is forwarded to the kernel with a reader-role token and can reach POST /api/search/fullTextSearchBloc...

CVE-2026-74868

SiYuan versions before 3.7.4 contain an unthrottled brute-force vulnerability in the Publish Service Basic Auth implementation PublishServiceTransport.RoundTrip in kernel/server/proxy/publish.go. The Publish Service runs on a separate, unauthenticated-by-default listener default TCP port 6808 and...

CVE-2026-74868 SiYuan before 3.7.4 Brute-Force Authentication via Publish Service

SiYuan versions before 3.7.4 contain an unthrottled brute-force vulnerability in the Publish Service Basic Auth implementation PublishServiceTransport.RoundTrip in kernel/server/proxy/publish.go. The Publish Service runs on a separate, unauthenticated-by-default listener default TCP port 6808 and...

CVE-2026-74868 SiYuan before 3.7.4 Brute-Force Authentication via Publish Service

SiYuan versions before 3.7.4 contain an unthrottled brute-force vulnerability in the Publish Service Basic Auth implementation PublishServiceTransport.RoundTrip in kernel/server/proxy/publish.go. The Publish Service runs on a separate, unauthenticated-by-default listener default TCP port 6808 and...