CLEANSTART-2026-HI18999 OpenTelemetry-Go is the Go implementation of OpenTelemetry

Security vulnerability affects the temporal-server package. OpenTelemetry-Go is the Go implementation of OpenTelemetry...

CLEANSTART-2026-YK14292 OpenTelemetry-Go is the Go implementation of OpenTelemetry

Security vulnerability affects the temporal-server package. OpenTelemetry-Go is the Go implementation of OpenTelemetry...

CLEANSTART-2026-MM79132 Actions which insert URLs into the content attribute of HTML meta tags are not escaped

Security vulnerability affects the temporal-server package. Actions which insert URLs into the content attribute of HTML meta tags are not escaped...

CLEANSTART-2026-DT87219 ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label

Security vulnerability affects the temporal-server package. The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label...

CVE-2026-89139

Temporal Server compiles a Worker Controller Instance module into its Worker Service, and that module registers a compute provider named subprocess whose function is to launch a worker by running a command on the machine hosting the Worker Service. The program name and the argument vector that...

CVE-2026-87858

Temporal Server decided whether a Workflow completion callback was internal by reading a caller-supplied HTTP header. An authenticated caller holding only write permission in a single namespace could attach a completion callback whose URL host matched the configured callback address allowlist,...

CVE-2026-16652

Temporal Server did not bound the work performed while searching for a Schedule's next action time. An authenticated caller with namespace write permission could create or update a Schedule that combines a fine-grained cadence with an exclusion calendar that rejects every candidate time, causing...

CVE-2026-89139 Temporal Server worker deployment compute provider executes a caller-supplied command on the Worker Service host

Temporal Server compiles a Worker Controller Instance module into its Worker Service, and that module registers a compute provider named subprocess whose function is to launch a worker by running a command on the machine hosting the Worker Service. The program name and the argument vector that...

CVE-2026-89139 Temporal Server worker deployment compute provider executes a caller-supplied command on the Worker Service host

Temporal Server compiles a Worker Controller Instance module into its Worker Service, and that module registers a compute provider named subprocess whose function is to launch a worker by running a command on the machine hosting the Worker Service. The program name and the argument vector that...

CVE-2026-89139

Temporal Server versions 1.31.0 through

CVE-2026-89139 Temporal Server worker deployment compute provider executes a caller-supplied command on the Worker Service host

Temporal Server compiles a Worker Controller Instance module into its Worker Service, and that module registers a compute provider named subprocess whose function is to launch a worker by running a command on the machine hosting the Worker Service. The program name and the argument vector that...

EUVD-2026-83897

Temporal Server compiles a Worker Controller Instance module into its Worker Service, and that module registers a compute provider named subprocess whose function is to launch a worker by running a command on the machine hosting the Worker Service. The program name and the argument vector that...

EUVD-2026-83896

Temporal Server decided whether a Workflow completion callback was internal by reading a caller-supplied HTTP header. An authenticated caller holding only write permission in a single namespace could attach a completion callback whose URL host matched the configured callback address allowlist,...

CVE-2026-87858

Temporal Server is vulnerable in its Workflow completion callback delivery logic (both HSM and CHASM implementations). A caller with only write permission in a single namespace can attach a callback with a non-empty source header, causing the History service to re-target the request to the intern...

CVE-2026-87858 Temporal Server completion callback source header can direct attacker-chosen requests to the internal frontend with administrator authorization

Temporal Server decided whether a Workflow completion callback was internal by reading a caller-supplied HTTP header. An authenticated caller holding only write permission in a single namespace could attach a completion callback whose URL host matched the configured callback address allowlist,...

CVE-2026-87858 Temporal Server completion callback source header can direct attacker-chosen requests to the internal frontend with administrator authorization

Temporal Server decided whether a Workflow completion callback was internal by reading a caller-supplied HTTP header. An authenticated caller holding only write permission in a single namespace could attach a completion callback whose URL host matched the configured callback address allowlist,...

CVE-2026-87858 Temporal Server completion callback source header can direct attacker-chosen requests to the internal frontend with administrator authorization

Temporal Server decided whether a Workflow completion callback was internal by reading a caller-supplied HTTP header. An authenticated caller holding only write permission in a single namespace could attach a completion callback whose URL host matched the configured callback address allowlist,...

CVE-2026-65651

temporalio/sqlparser accepts SQL with deeply nested unary expressions and returns a correspondingly deep abstract syntax tree without enforcing a nesting limit . The library's String and Walk operations traverse that tree recursively, causing a runtime-fatal Go stack overflow that terminates the ...

CVE-2026-65651 temporalio/sqlparser deeply nested unary expressions can cause a fatal stack overflow during AST traversal

temporalio/sqlparser accepts SQL containing deeply nested unary expressions and can return a correspondingly deep abstract syntax tree without enforcing an applicable nesting limit. The library's String and Walk operations recursively traverse that tree. An application that parses...

EUVD-2026-83891

temporalio/sqlparser can panic when Parse, ParseStrictDDL, or ParseNext processes a MySQL version comment whose contents are empty or consist only of one to five decimal digits. ExtractMysqlComment does not check the -1 result returned by strings.IndexFunc before using it as a slice boundary. The...