Search criteria
4 vulnerabilities by Temporal
CVE-2025-14986 (GCVE-0-2025-14986)
Vulnerability from cvelistv5 – Published: 2025-12-30 20:17 – Updated: 2026-01-02 15:31
VLAI?
Title
ExecuteMultiOperation Namespace Policy Bypass
Summary
When frontend.enableExecuteMultiOperation is enabled, the server can apply namespace-scoped validation and feature gates for the embedded StartWorkflowExecutionRequest using its Namespace field rather than the outer, authorized ExecuteMultiOperationRequest.Namespace. This allows a caller authorized for one namespace to bypass that namespace's limits/policies by setting the embedded start request's namespace to a different namespace. The workflow is still created in the outer (authorized) namespace; only validation/gating is performed under the wrong namespace context.
This issue affects Temporal: from 1.24.0 through 1.29.1. Fixed in 1.27.4, 1.28.2, 1.29.2.
Severity ?
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
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CVE-2025-14987 (GCVE-0-2025-14987)
Vulnerability from cvelistv5 – Published: 2025-12-30 20:16 – Updated: 2026-01-02 15:30
VLAI?
Title
Cross Namespace Commands Authorization Bypass
Summary
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.
This issue affects Temporal: through 1.29.1. Fixed in 1.27.4, 1.28.2, 1.29.2.
Severity ?
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
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CVE-2025-8396 (GCVE-0-2025-8396)
Vulnerability from cvelistv5 – Published: 2025-09-15 14:13 – Updated: 2025-09-15 14:52
VLAI?
Summary
Insufficiently specific bounds checking on authorization header could lead to denial of service in the Temporal server on all platforms due to excessive memory allocation.This issue affects all platforms and versions of OSS Server prior to 1.26.3, 1.27.3, and 1.28.1 (i.e., fixed in 1.26.3, 1.27.3, and 1.28.1 and later). Temporal Cloud services are not impacted.
Severity ?
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Temporal | OSS Server |
Affected:
0 , < 1.26.3
(semver)
Affected: 1.27.0 , < 1.27.3 (semver) Affected: 1.28.0 , < 1.28.1 (semver) |
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CVE-2023-3485 (GCVE-0-2023-3485)
Vulnerability from cvelistv5 – Published: 2023-06-30 17:37 – Updated: 2024-10-28 13:05
VLAI?
Title
Insecure Default Authorization in Temporal Server
Summary
Insecure defaults in open-source Temporal Server before version 1.20 on all platforms allows an attacker to craft a task token with access to a namespace other than the one specified in the request. Creation of this task token must be done outside of the normal Temporal server flow. It requires the namespace UUID and information from the workflow history for the target namespace. Under these conditions, it is possible to interfere with pending tasks in other namespaces, such as marking a task failed or completed.
If a task is targeted for completion by the attacker, the targeted namespace must also be using the same data converter configuration as the initial, valid, namespace for the task completion payload to be decoded by workers in the target namespace.
Severity ?
CWE
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Temporal Technologies Inc. | Temporal Server |
Affected:
1.9.1 , < 1.20
(semver)
|
Credits
Jacob LeGrone
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"https://github.com/temporalio/temporal/blob/master/service/frontend/service.go"
],
"repo": "https://github.com/temporalio/temporal",
"vendor": "Temporal Technologies Inc.",
"versions": [
{
"lessThan": "1.20",
"status": "affected",
"version": "1.9.1",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"user": "00000000-0000-4000-9000-000000000000",
"value": "Jacob LeGrone"
}
],
"datePublic": "2023-07-03T15:30:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Insecure defaults in open-source Temporal Server before version 1.20 on all platforms allows an attacker to craft a task token with access to a namespace other than the one specified in the request. Creation of this task token must be done outside of the normal Temporal server flow. It requires the namespace UUID and information from the workflow history for the target namespace. Under these conditions, it is possible to interfere with pending tasks in other namespaces, such as marking a task failed or completed.\u003cbr\u003eIf a task is targeted for completion by the attacker, the targeted namespace must also be using the same data converter configuration as the initial, valid, namespace for the task completion payload to be decoded by workers in the target namespace.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e"
}
],
"value": "Insecure defaults in open-source Temporal Server before version 1.20 on all platforms allows an attacker to craft a task token with access to a namespace other than the one specified in the request. Creation of this task token must be done outside of the normal Temporal server flow. It requires the namespace UUID and information from the workflow history for the target namespace. Under these conditions, it is possible to interfere with pending tasks in other namespaces, such as marking a task failed or completed.\nIf a task is targeted for completion by the attacker, the targeted namespace must also be using the same data converter configuration as the initial, valid, namespace for the task completion payload to be decoded by workers in the target namespace.\n\n\n\n"
}
],
"impacts": [
{
"capecId": "CAPEC-114",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-114 Authentication Abuse Authentication Abuse"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 3,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:L",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-863",
"description": "CWE-863 Incorrect Authorization3 Incorrect Authorization",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-1188",
"description": "CWE-1188 Insecure Default Initialization of Resource Insecure Default Initialization of Resource",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-06-30T17:38:22.233Z",
"orgId": "61241ed8-fa44-4f23-92db-b8c443751968",
"shortName": "Temporal"
},
"references": [
{
"url": "https://github.com/temporalio/temporal/releases/tag/v1.20.0"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cul\u003e\u003cli\u003e\u003cspan style=\"background-color: var(--wht);\"\u003eSet \u0026nbsp;\u003c/span\u003e\u003ccode\u003e\u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://github.com/temporalio/temporal/pull/3798\"\u003efrontend.enableTokenNamespaceEnforcement\u003c/a\u003e\u0026nbsp;\u003c/code\u003e\u003cspan style=\"background-color: var(--wht);\"\u003eto \u003c/span\u003e\u003ctt\u003etrue\u003c/tt\u003e\u003cspan style=\"background-color: var(--wht);\"\u003e\u0026nbsp; \u003c/span\u003e\u003c/li\u003e\u003cli\u003e\u003cspan style=\"background-color: var(--wht);\"\u003eUpgrade to version 1.20 or above, where this is the default\u003c/span\u003e\u003c/li\u003e\u003c/ul\u003e"
}
],
"value": " * Set \u00a0 frontend.enableTokenNamespaceEnforcement https://github.com/temporalio/temporal/pull/3798 \u00a0to true\u00a0 \n * Upgrade to version 1.20 or above, where this is the default\n\n\n"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Insecure Default Authorization in Temporal Server",
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
}
},
"cveMetadata": {
"assignerOrgId": "61241ed8-fa44-4f23-92db-b8c443751968",
"assignerShortName": "Temporal",
"cveId": "CVE-2023-3485",
"datePublished": "2023-06-30T17:37:57.772Z",
"dateReserved": "2023-06-30T17:29:17.808Z",
"dateUpdated": "2024-10-28T13:05:11.946Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}