UBUNTU-CVE-2026-55962

TLS 1.3 post-handshake authentication PHA issue where a server could accept a client's Finished message without the client having sent a Certificate and CertificateVerify. The post-handshake-auth exemption that allows an empty/absent peer certificate was only intended for the initial handshake, b...

CVE-2025-71336 Flowise - Unsandboxed Remote Code Execution via Custom MCP

Flowise before 3.0.6 affected versions 2.2.7-patch.1 and earlier contains an unsandboxed remote code execution vulnerability in the Custom MCP feature, which is designed to execute OS commands such as launching local MCP servers. Because Flowise's authentication and authorization model is minimal...

GitHub MCP Server: Lockdown mode singleton in HTTP server causes cross-user GraphQL client confusion

Summary When running in HTTP mode with --lockdown-mode enabled, the RepoAccessCache is implemented as a process-global singleton initialized with the first authenticated user's GraphQL client. All subsequent requests from different users share this singleton and their lockdown-related GraphQL...

CVE-2026-55962

TLS 1.3 post-handshake authentication PHA issue where a server could accept a client's Finished message without the client having sent a Certificate and CertificateVerify. The post-handshake-auth exemption that allows an empty/absent peer certificate was only intended for the initial handshake, b...

CVE-2026-55962 TLS 1.3 post-handshake authentication: server accepts Finished without client Certificate/CertificateVerify

TLS 1.3 post-handshake authentication PHA issue where a server could accept a client's Finished message without the client having sent a Certificate and CertificateVerify. The post-handshake-auth exemption that allows an empty/absent peer certificate was only intended for the initial handshake, b...

CVE-2026-55962

TLS 1.3 post-handshake authentication PHA issue where a server could accept a client's Finished message without the client having sent a Certificate and CertificateVerify. The post-handshake-auth exemption that allows an empty/absent peer certificate was only intended for the initial handshake, b...

CVE-2026-55962

CVE-2026-55962 (WolfSSL) : TLS 1.3 post-handshake authentication could allow a server to accept a client’s Finished message without a Certificate and CertificateVerify if a post-handshake CertificateRequest was outstanding. The fix scopes the check to the initial handshake: after certReqCtx is se...

CVE-2026-12975 Apicurio/apicurio-registry: apicurio-registry: unhardened saxparser in content-type detection leads to blind xxe / ssrf / billion-laughs dos

A flaw was found in Apicurio Registry. The ContentTypeUtil.isParsableXml method creates a SAXParserFactory without enabling secure processing features or disabling external entity resolution. An attacker with artifact-write permission or unauthenticated when the registry runs with default...

CVE-2026-12975 Apicurio/apicurio-registry: apicurio-registry: unhardened saxparser in content-type detection leads to blind xxe / ssrf / billion-laughs dos

A flaw was found in Apicurio Registry. The ContentTypeUtil.isParsableXml method creates a SAXParserFactory without enabling secure processing features or disabling external entity resolution. An attacker with artifact-write permission or unauthenticated when the registry runs with default...

CVE-2026-12975

A flaw was found in Apicurio Registry. The ContentTypeUtil.isParsableXml method creates a SAXParserFactory without enabling secure processing features or disabling external entity resolution. An attacker with artifact-write permission or unauthenticated when the registry runs with default...

CVE-2026-6412

Certificate policy and RFC 8446 compliance concerns regarding the continued acceptance of SHA-1/MD5 in certificate processing...

CVE-2026-6412 Continued acceptance of SHA-1/MD5 digests in certificate processing

Certificate policy and RFC 8446 compliance concerns regarding the continued acceptance of SHA-1/MD5 in certificate processing...

GHSA-2F33-PR97-265Q MessagePack-CSharp: ASP.NET Core MessagePackInputFormatter defaults to TrustedData for HTTP request bodies

Summary The parameterless MessagePackInputFormatter constructor uses default serializer options, which resolve to MessagePackSerializerOptions.Standard with MessagePackSecurity.TrustedData. The formatter is designed for ASP.NET Core MVC request bodies, which commonly cross an HTTP trust boundary...

keycloak-policy-enforcer: Keycloak Policy Enforcer: Authorization bypass via incorrect URI comparison

A flaw was found in Keycloak Policy Enforcer. This vulnerability allows any authenticated user to bypass all authorization policies, including role, scope, and User-Managed Access UMA permission checks. By including the configured access-denied page path within a request URL, either as a path...

GO-2026-5331 Ech0: Unauthenticated SSRF in GetWebsiteTitle allows access to internal services and cloud metadata in github.com/lin-snow/ech0

Ech0: Unauthenticated SSRF in GetWebsiteTitle allows access to internal services and cloud metadata in github.com/lin-snow/ech0...

GO-2026-5356 Arcane has Unauthenticated SSRF with Conditional Response Reflection in Template Fetch Endpoint in github.com/getarcaneapp/arcane/backend

Arcane has Unauthenticated SSRF with Conditional Response Reflection in Template Fetch Endpoint in github.com/getarcaneapp/arcane/backend...

GO-2026-5209 Free5GC AMF Bypasses UE Security Capabilities on NGAP PathSwitchRequest in github.com/free5gc/amf

Free5GC AMF Bypasses UE Security Capabilities on NGAP PathSwitchRequest in github.com/free5gc/amf...

GO-2026-5216 OliveTin has a Concurrent Template Parsing Race Condition which Leads to Cross-Request Command Contamination in github.com/OliveTin/OliveTin

OliveTin has a Concurrent Template Parsing Race Condition which Leads to Cross-Request Command Contamination in github.com/OliveTin/OliveTin...

GO-2026-5261 Nezha has cross-site GET request that can trigger stored cron commands on a victim's agents in github.com/nezhahq/nezha

Nezha has cross-site GET request that can trigger stored cron commands on a victim's agents in github.com/nezhahq/nezha. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive...

GO-2026-5269 Volcano's webhook server vulnerable to OOM due to unbounded HTTP request body size in volcano.sh/volcano

Volcano's webhook server vulnerable to OOM due to unbounded HTTP request body size in volcano.sh/volcano...