github - ghsa-hmhp-gh8m-c8xp

GHSA-HMHP-GH8M-C8XP

Vulnerability from github – Published: 2025-12-30 21:30 – Updated: 2025-12-30 21:30

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. This issue affects Temporal: through 1.29.1. Fixed in 1.27.4, 1.28.2, 1.29.2.

Severity ?

5.3 (Medium)


                  
                    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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-14987"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-30T21:15:43Z",
    "severity": "MODERATE"
  },
  "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.",
  "id": "GHSA-hmhp-gh8m-c8xp",
  "modified": "2025-12-30T21:30:33Z",
  "published": "2025-12-30T21:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-14987"
    },
    {
      "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2025-14987 (GCVE-0-2025-14987)

Vulnerability from cvelistv5 – Published: 2025-12-30 20:16 – Updated: 2025-12-30 20:16

Title

Cross Namespace Commands Authorization Bypass

Summary

Severity ?

5.3 (Medium)


                        
                          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

CWE

CWE-863 - Incorrect Authorization

Assigner

Temporal

References

URL

Tags

	https://github.com/temporalio/temporal/releases/t…
	https://github.com/temporalio/temporal/releases/t…
	https://github.com/temporalio/temporal/releases/t…

Impacted products

	Vendor	Product	Version
	Temporal	Temporal	Affected: 0 , ≤ 1.29.1 (semver) Affected: 0 , ≤ 1.28.1 (semver) Affected: 0 , ≤ 1.27.3 (semver)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://github.com/temporalio/temporal",
          "defaultStatus": "unaffected",
          "packageName": "temporal",
          "product": "Temporal",
          "repo": "https://github.com/temporalio/temporal",
          "vendor": "Temporal",
          "versions": [
            {
              "lessThanOrEqual": "1.29.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "1.28.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "1.27.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "When \u003ccode\u003esystem.enableCrossNamespaceCommands\u003c/code\u003e is enabled (on by default), the Temporal server permits certain workflow task commands (e.g. \u003ccode\u003eStartChildWorkflowExecution\u003c/code\u003e, \u003ccode\u003eSignalExternalWorkflowExecution\u003c/code\u003e, \u003ccode\u003eRequestCancelExternalWorkflowExecution\u003c/code\u003e) to target a different namespace than the namespace authorized at the gRPC boundary. The frontend authorizes \u003ccode\u003eRespondWorkflowTaskCompleted\u003c/code\u003e 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.\u003cbr\u003eThis issue affects Temporal: through 1.29.1. Fixed in 1.27.4, 1.28.2, 1.29.2."
            }
          ],
          "value": "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."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-115",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-115 Authentication Bypass"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "LOW",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863 Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-30T20:16:20.154Z",
        "orgId": "61241ed8-fa44-4f23-92db-b8c443751968",
        "shortName": "Temporal"
      },
      "references": [
        {
          "url": "https://github.com/temporalio/temporal/releases/tag/v1.27.4"
        },
        {
          "url": "https://github.com/temporalio/temporal/releases/tag/v1.28.2"
        },
        {
          "url": "https://github.com/temporalio/temporal/releases/tag/v1.29.2"
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "title": "Cross Namespace Commands Authorization Bypass",
      "workarounds": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Set \u003ccode\u003esystem.enableCrossNamespaceCommands\u003c/code\u003e to false, unless cross-namespace workflow-task commands are explicitly required."
            }
          ],
          "value": "Set system.enableCrossNamespaceCommands to false, unless cross-namespace workflow-task commands are explicitly required."
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "61241ed8-fa44-4f23-92db-b8c443751968",
    "assignerShortName": "Temporal",
    "cveId": "CVE-2025-14987",
    "datePublished": "2025-12-30T20:16:20.154Z",
    "dateReserved": "2025-12-19T19:19:01.833Z",
    "dateUpdated": "2025-12-30T20:16:20.154Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-HMHP-GH8M-C8XP

CVE-2025-14987 (GCVE-0-2025-14987)

Tags

Sightings

Nomenclature