GO-2026-6602 Checksum database bypass for golang.org/toolchain in cmd/go

Previously, a user operating inside of a malicious Go project that defines a bogus golang.org/toolchain go.sum entry and operates a malicious GOMODPROXY the user chooses to use can bypass the intended checksum. We now ensure that golang.org/toolchain always goes to the network for the canonical...

GO-2026-6599 Reset context tracking on consecutive template expressions in html/template

When a JavaScript template literal contains consecutive expressions, the context tracking state was not properly reset upon entering a new expression. We now ensure that template-literal expression entries correctly reset context variables so all subsequent regular expression literals are...

GO-2026-6617 HTTP/2 server crash due to HPACK encoder race in net/http

HTTP/2 servers could end up crashing due to inadvertently modifying its HPACK encoder concurrently. This happens because the server modifies the HPACK encoder from two goroutines without synchronization: one uses the encoder to encode a HEADERS frame as part of a response sent to a client and the...

GO-2026-6605 HTTP/1 client connection desynchronization after CONNECT rejection in net/http

When http.Transport sends an HTTP/1 CONNECT request with a non-empty Request.Body, it writes the body directly to the connection without framing after the request headers. If the server rejects the CONNECT request with a non-2xx keep-alive response, Transport returns the connection to the idle...

GO-2026-6613 HTTP/1 server connection desynchronization after 2xx CONNECT response in net/http

When an HTTP server handler sends a 2xx response to an HTTP/1 CONNECT request and returns without hijacking the connection, the server improperly continues to read and serve requests from the connection. Since a 2xx response to an HTTP/1 CONNECT converts the connection into a tunnel, the server...

GO-2026-6603 HTTP/2 server memory exhaustion due to Trailer headers in net/http

When "Trailer" headers are sent by a client, the HTTP server internally uses the header values to populate the Request.Trailer map passed to the server handler. Because Request.Trailer is a map, each entry incurs memory overhead. For HTTP/2 servers, a malicious client can exploit this by sending ...

GO-2026-6607 Reject malformed ECH outer extension references in crypto/tls

Multiple ECH outer extension references are not permitted under RFC 9849; previously, a client could send a well-crafted packet that could trigger memory exhaustion in the server process by specifying multiple references. We now reject these as malformed and curb the memory amplification vector a...

GO-2026-6600 Recognize yield as regexp preceder keyword in html/template

A trusted template author may have previously written a valid template wherein the use of the 'yield' keyword would not be correctly escaped. We now ensure that valid keyword uses are escaped and non-keyword uses are not escaped...

GO-2026-6612 Double flow control refund on HTTP/2 server streams in net/http

The HTTP/2 server can refund connection-level flow control twice for the same data: Once when a client resets a stream refunding data for any sent-but-unread portion of the stream, and again when a request handler reads the buffered data. A malicious client can exploit this to bypass the configur...

GO-2026-6601 Checksum bypass for golang.org/fips140 in cmd/go

Previously, a user operating inside of a malicious Go project that defines a bogus golang.org/fips140 and operates a malicious GOMODPROXY the user chooses to connect to can serve an arbitrary module in its place. We now unpack the trusted ziphash for the bundled golang.org/fips140 module and...

GO-2026-6610 HTTP/2 transport accepts malformed framing-related headers in net/http

Historically, we have been rather lax about malformed framing-related headers in our HTTP/2 implementation, as they cannot interfere with HTTP/2 framing. However, this makes it possible for our HTTP/2 implementation to forward responses containing such headers to an HTTP/1 client when acting as a...

GO-2026-6611 Excessive CPU consumption from repeated initial window changes in net/http

A malicious HTTP/2 peer can cause excessive CPU consumption in the client or server by opening a large number of streams and then sending many small SETTINGS frames containing SETTINGSINITIALWINDOWSIZE values...

GO-2026-6608 Memory limit bypass when parsing MIME headers in net/textproto, mime/multipart

Parsing a multipart form can bypass memory limits and read an arbitrarily long line into memory when the remaining limit at the start of a part is less than 400 bytes...

GO-2026-6604 Root.Mkdir(All) can follow junctions out of the root on Windows in os

On Windows, when the target of Root.Mkdir or Root.MkdirAll is a junction pointing to an empty location, the operation can create a directory at the junction target even when that target is located outside the root. This only applies to operations where the last path component is a junction...

GO-2026-6609 Lack of limit on size of parsed Range headers in net/http

When parsing a Range header containing a large number of small ranges, FileServerFS, ServeContent, and ServeFileFS can consume an excessive amount of CPU...

GO-2026-6665 Snowflake Go Driver writes sensitive information to logs in github.com/snowflakedb/gosnowflake

Snowflake Go Driver writes sensitive information to logs in github.com/snowflakedb/gosnowflake...

GO-2026-6664 Grafana legacy correlations allow cross-tenant disclosure and deletion in github.com/grafana/grafana

Grafana legacy correlations allow cross-tenant disclosure and deletion in github.com/grafana/grafana. 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 reports from...

GO-2026-6663 SiYuan: TLS Private Keys Readable via getFile (Incomplete Blocklist) in github.com/siyuan-note/siyuan/kernel

SiYuan: TLS Private Keys Readable via getFile Incomplete Blocklist in github.com/siyuan-note/siyuan/kernel...

GO-2026-6662 SiYuan: /history/*path and /repo/diff/*path potentially exposing historical snapshots of data/.siyuan/publishAccess.json and data/templates/* in github.com/siyuan-note/siyuan/kernel

SiYuan: /history/path and /repo/diff/path potentially exposing historical snapshots of data/.siyuan/publishAccess.json and data/templates/ in github.com/siyuan-note/siyuan/kernel...

GO-2026-6489 Pocketbase: Unhandled panic in worker goroutines in github.com/pocketbase/pocketbase

Pocketbase: Unhandled panic in worker goroutines in github.com/pocketbase/pocketbase...

GO-2026-6638 Nightingale exposes datasource credentials to low-privilege users in github.com/ccfos/nightingale

Nightingale exposes datasource credentials to low-privilege users in github.com/ccfos/nightingale...

GO-2026-6639 Anubis: Policy bypass via client controlled X-Original-URI header in github.com/TecharoHQ/anubis

Anubis: Policy bypass via client controlled X-Original-URI header in github.com/TecharoHQ/anubis...

GO-2026-6650 SiYuan: Cross-Site WebSocket Hijacking on the admin-only network proxy endpoint (`/ws/network/proxy`) via explicit `CheckOrigin: true` bypass in github.com/siyuan-note/siyuan/kernel

SiYuan: Cross-Site WebSocket Hijacking on the admin-only network proxy endpoint /ws/network/proxy via explicit CheckOrigin: true bypass in github.com/siyuan-note/siyuan/kernel...

GO-2026-6645 LocalAI POST /models/apply permits unauthenticated server-side request forgery through gallery URLs in github.com/mudler/LocalAI

LocalAI POST /models/apply permits unauthenticated server-side request forgery through gallery URLs in github.com/mudler/LocalAI...

GO-2026-6655 SiYuan MCP asset.upload Reads Arbitrary Absolute File Paths (Workspace Boundary Bypass) in github.com/siyuan-note/siyuan/kernel

SiYuan MCP asset.upload Reads Arbitrary Absolute File Paths Workspace Boundary Bypass in github.com/siyuan-note/siyuan/kernel...

GO-2026-6654 SiYuan: 17 block metadata/content endpoints in kernel/api/block.go have zero publish-access filtering, reachable by anonymous publish-mode readers in github.com/siyuan-note/siyuan/kernel

SiYuan: 17 block metadata/content endpoints in kernel/api/block.go have zero publish-access filtering, reachable by anonymous publish-mode readers in github.com/siyuan-note/siyuan/kernel...

GO-2026-6656 gitea-runner: workflow container.options passes host namespaces and capability flags to job container when privileged mode is disabled in gitea.com/gitea/runner

gitea-runner: workflow container.options passes host namespaces and capability flags to job container when privileged mode is disabled in gitea.com/gitea/runner...

GO-2026-6657 SiYuan Agent Tools SSRF via DNS-Rebinding TOCTOU (Bypass of CheckHostSSRF) in github.com/siyuan-note/siyuan/kernel

SiYuan Agent Tools SSRF via DNS-Rebinding TOCTOU Bypass of CheckHostSSRF in github.com/siyuan-note/siyuan/kernel...

GO-2026-6632 SiYuan: getAttributeViewSearchTarget returns database row content to anonymous readers with no publish-access check, reopening the class closed one day earlier at the adjacent route in github.com/siyuan-note/siyuan/kernel

SiYuan: getAttributeViewSearchTarget returns database row content to anonymous readers with no publish-access check, reopening the class closed one day earlier at the adjacent route in github.com/siyuan-note/siyuan/kernel...

GO-2026-6622 SiYuan discloses an administrator's open documents and search terms to anonymous readers in github.com/siyuan-note/siyuan/kernel

SiYuan discloses an administrator's open documents and search terms to anonymous readers in github.com/siyuan-note/siyuan/kernel...

GO-2026-6635 SiYuan: The reference filter for getRefIDs checks visibility but not the password tier, disclosing that password-protected documents reference a given block in github.com/siyuan-note/siyuan/kernel

SiYuan: The reference filter for getRefIDs checks visibility but not the password tier, disclosing that password-protected documents reference a given block in github.com/siyuan-note/siyuan/kernel...

GO-2026-6634 SiYuan: getBookmarkLabels returns every bookmark label in the workspace to anonymous readers, with no publish-access filtering in github.com/siyuan-note/siyuan/kernel

SiYuan: getBookmarkLabels returns every bookmark label in the workspace to anonymous readers, with no publish-access filtering in github.com/siyuan-note/siyuan/kernel...

GO-2026-6626 SiYuan: getUniqueFilename passes an unvalidated client-supplied path to the filesystem, giving anonymous readers an existence oracle over the entire host filesystem in github.com/siyuan-note/siyuan/kernel

SiYuan: getUniqueFilename passes an unvalidated client-supplied path to the filesystem, giving anonymous readers an existence oracle over the entire host filesystem in github.com/siyuan-note/siyuan/kernel...

GO-2026-6621 SiYuan: Unauthenticated SQL injection in searchDocs via unescaped keyword (publish mode): cross-notebook read/write with statement stacking in github.com/siyuan-note/siyuan/kernel

SiYuan: Unauthenticated SQL injection in searchDocs via unescaped keyword publish mode: cross-notebook read/write with statement stacking in github.com/siyuan-note/siyuan/kernel...

GO-2026-6624 SiYuan: Outline state for any document, including documents forbidden to readers, is returned by /api/storage/getOutlineStorage with no access check in github.com/siyuan-note/siyuan/kernel

SiYuan: Outline state for any document, including documents forbidden to readers, is returned by /api/storage/getOutlineStorage with no access check in github.com/siyuan-note/siyuan/kernel...

GO-2026-6629 Panic parsing crafted input in x/text/secure/precis in golang.org/x/text

The Nickname profile can panic with an out-of-bounds slice error when transforming crafted input into a short destination buffer...

GO-2026-6616 OpenTelemetry-Go: UTF-8 replacement rune bypasses attribute length truncation in go.opentelemetry.io/otel/sdk

OpenTelemetry-Go: UTF-8 replacement rune bypasses attribute length truncation in go.opentelemetry.io/otel/sdk...

GO-2026-6615 OpenTelemetry-Go: BatchProcessor can busy-spin when export buffer is full in go.opentelemetry.io/otel/sdk/log

OpenTelemetry-Go: BatchProcessor can busy-spin when export buffer is full in go.opentelemetry.io/otel/sdk/log...

GO-2026-6620 fzf vulnerable to denial of service through quadratic HTTP request-body accumulation in github.com/junegunn/fzf

fzf vulnerable to denial of service through quadratic HTTP request-body accumulation in github.com/junegunn/fzf...

GO-2026-6619 Portainer CE allows username enumeration through authentication response timing in github.com/portainer/portainer

Portainer CE allows username enumeration through authentication response timing in github.com/portainer/portainer...

GO-2026-6493 RabbitMQ amqp091-go: Connection Configuration Overwrite via Unsanitized TLS Path Parameter Injection in github.com/rabbitmq/amqp091-go

RabbitMQ amqp091-go: Connection Configuration Overwrite via Unsanitized TLS Path Parameter Injection in github.com/rabbitmq/amqp091-go...

GO-2026-6494 RabbitMQ amqp091-go: Denial of Service via Malicious Field Length in AMQP Client in github.com/rabbitmq/amqp091-go

RabbitMQ amqp091-go: Denial of Service via Malicious Field Length in AMQP Client in github.com/rabbitmq/amqp091-go...

GO-2026-6498 RabbitMQ amqp091-go: Silent Data Truncation and State Corruption via Shortstr Integer Overflow in github.com/rabbitmq/amqp091-go

RabbitMQ amqp091-go: Silent Data Truncation and State Corruption via Shortstr Integer Overflow in github.com/rabbitmq/amqp091-go...

GO-2026-6500 RabbitMQ amqp091-go: Resource Exhaustion (OOM) via Unbounded Body Buffer Allocation in github.com/rabbitmq/amqp091-go

RabbitMQ amqp091-go: Resource Exhaustion OOM via Unbounded Body Buffer Allocation in github.com/rabbitmq/amqp091-go...

GO-2026-6503 RabbitMQ amqp091-go: Denial of Service via Sub-Spec Frame Size Negotiation in github.com/rabbitmq/amqp091-go

RabbitMQ amqp091-go: Denial of Service via Sub-Spec Frame Size Negotiation in github.com/rabbitmq/amqp091-go...

GO-2026-6496 RabbitMQ amqp091-go: Protocol Desynchronization and Frame Injection via Integer Overflow in readLongstr in github.com/rabbitmq/amqp091-go

RabbitMQ amqp091-go: Protocol Desynchronization and Frame Injection via Integer Overflow in readLongstr in github.com/rabbitmq/amqp091-go...

GO-2026-6505 OpenTelemetry-Go: Exporter config logging may leak endpoint URLs in info logs in go.opentelemetry.io/otel/exporters/otlp/otlptrace

OpenTelemetry-Go: Exporter config logging may leak endpoint URLs in info logs in go.opentelemetry.io/otel/exporters/otlp/otlptrace...

GO-2026-6502 RabbitMQ amqp091-go: Consumer Message Flooding via Signed-to-Unsigned Integer Casting in Qos Configuration in github.com/rabbitmq/amqp091-go

RabbitMQ amqp091-go: Consumer Message Flooding via Signed-to-Unsigned Integer Casting in Qos Configuration in github.com/rabbitmq/amqp091-go...

GO-2026-6566 Fabio - Incomplete fix for CVE-2025-48865: operator-configured trust headers (clientip/tls/requestid) still strippable via the Connection header in github.com/fabiolb/fabio

Fabio - Incomplete fix for CVE-2025-48865: operator-configured trust headers clientip/tls/requestid still strippable via the Connection header in github.com/fabiolb/fabio...

GO-2026-6492 RabbitMQ amqp091-go: Missing Explicit TLS Minimum Version Configuration In URI Parser in github.com/rabbitmq/amqp091-go

RabbitMQ amqp091-go: Missing Explicit TLS Minimum Version Configuration In URI Parser in github.com/rabbitmq/amqp091-go...