CVE-2025-14987: Go.temporal.io/server Temporal Has An Incorrect Authorization Vulnerability
MODERATECVE-2025-14987 is a MODERATE temporal has an incorrect authorization vulnerability (CWE-863: Incorrect Authorization) affecting Go.temporal.io/server libraries in the Go ecosystem. The issue involves temporal has an incorrect authorization vulnerability. Remediation is available by upgrading affected packages to version 1.27.4, 1.28.2, 1.29.2, 1.29.0-135.0.0.20251218190115-b292a32bacdf.
CVE-2025-14987 at a Glance
How to Fix CVE-2025-14987
To remediate this vulnerability, upgrade all affected Go.temporal.io/server dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade go.temporal.io/server to 1.27.4Upgrade go.temporal.io/server to 1.28.2Upgrade go.temporal.io/server to 1.29.2Upgrade go.temporal.io/server to 1.29.0-135.0.0.20251218190115-b292a32bacdfRun the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for go.temporal.io/serverHow to Check if You Are Affected
To determine whether your application is affected by CVE-2025-14987, inspect your project dependencies for Go.temporal.io/server:
inspect dependencies for go.temporal.io/serverAnalyze the terminal output to locate any version of Go.temporal.io/server in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.27.4), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Go.temporal.io/server, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2025-14987 Affected Go.temporal.io/server Versions
4 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
go.temporal.io/server
|
Go |
< 1.27.4
|
1.27.4
|
|
go.temporal.io/server
|
Go |
≥ 1.28.0
< 1.28.2
|
1.28.2
|
|
go.temporal.io/server
|
Go |
≥ 1.29.0
< 1.29.2
|
1.29.2
|
|
go.temporal.io/server
|
Go |
≥ 1.29.0-0
< 1.29.0-135.0.0.20251218190115-b292a32bacdf
|
1.29.0-135.0.0.20251218190115-b292a32bacdf
|
References
Frequently Asked Questions
What is CVE-2025-14987?
Which Go.temporal.io/server versions are affected?
What version fixes CVE-2025-14987?
Is go.temporal.io/server affected?
What CWE is associated with CVE-2025-14987?
How can I check Go dependencies for CVE-2025-14987?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-hmhp-gh8m-c8xp",
"modified" : "2026-01-02T15:46:14Z",
"published" : "2025-12-30T21:30:33Z",
"aliases" : [ "CVE-2025-14987" ],
"summary" : "Temporal has an Incorrect Authorization vulnerability",
"details" : "When system.enableCrossNamespaceCommands is enabled (on by default), the Temporal server permits certain workflow task commands (e.g. StartChildWorkflowExecution, SignalExternalWorkflowExecution, RequestCancelExternalWorkflowExecution) to target a different namespace than the namespace authorized at the gRPC boundary. The frontend authorizes RespondWorkflowTaskCompleted based on the outer request namespace, but the history service later resolves and executes the command using the namespace embedded in command attributes without authorizing the caller for that target namespace. This can allow a worker authorized for one namespace to create, signal, or cancel workflows in another namespace.\nThis issue affects Temporal: through 1.29.1. Fixed in 1.27.4, 1.28.2, 1.29.2.",
"severity" : [ {
"type" : "CVSS_V4",
"score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "go.temporal.io/server"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "1.27.4"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "go.temporal.io/server"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.28.0"
}, {
"fixed" : "1.28.2"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "go.temporal.io/server"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.29.0"
}, {
"fixed" : "1.29.2"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "go.temporal.io/server"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.29.0-0"
}, {
"fixed" : "1.29.0-135.0.0.20251218190115-b292a32bacdf"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-14987"
}, {
"type" : "WEB",
"url" : "https://github.com/temporalio/temporal/commit/b292a32bacdfa6472affd90f0a940408d5839cfa"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/temporalio/temporal"
}, {
"type" : "WEB",
"url" : "https://github.com/temporalio/temporal/releases/tag/v1.27.4"
}, {
"type" : "WEB",
"url" : "https://github.com/temporalio/temporal/releases/tag/v1.28.2"
}, {
"type" : "WEB",
"url" : "https://github.com/temporalio/temporal/releases/tag/v1.29.2"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-863" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-01-02T15:46:14Z",
"nvd_published_at" : "2025-12-30T21:15:43Z"
}
}