Vulnerability-Lookup

CVE-2026-3136 (GCVE-0-2026-3136)

Vulnerability from cvelistv5 – Published: 2026-03-03 16:22 – Updated: 2026-03-04 04:55

Title

Google Cloud Build Comment Control Bypass

Summary

An improper authorization vulnerability in GitHub Trigger Comment Control in Google Cloud Build prior to 2026-1-26 allows a remote attacker to execute arbitrary code in the build environment. This vulnerability was patched on 26 January 2026, and no customer action is needed.

Severity ?

8.6 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/U:Clear

CWE

CWE-863 - Incorrect Authorization (Permission Bypass)

Assigner

GoogleCloud

References

URL

Tags

https://docs.cloud.google.com/build/docs/release-…

Impacted products

	Vendor	Product	Version
	Google Cloud	Cloud Build	Affected: 0 , < 1/26/2026 (date)

Credits

inspector-ambitious

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-3136",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-03T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-04T04:55:36.155Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Cloud Build",
          "vendor": "Google Cloud",
          "versions": [
            {
              "lessThan": "1/26/2026",
              "status": "affected",
              "version": "0",
              "versionType": "date"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "inspector-ambitious"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "An improper authorization\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u0026nbsp;vulnerability in \u003c/span\u003eGitHub Trigger Comment Control\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u0026nbsp;in \u003c/span\u003eGoogle\u0026nbsp;Cloud Build\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u0026nbsp;\u003c/span\u003eprior to 2026-1-26\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u0026nbsp;allows \u003c/span\u003ea remote attacker\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u0026nbsp;to \u003c/span\u003eexecute arbitrary code in the build environment.\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eThis vulnerability was \u003c/span\u003e\u003cspan style=\"background-color: rgb(237, 192, 45);\"\u003epatched\u003c/span\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e on 26 January 2026, and no customer action is needed.\u003c/span\u003e\u003cbr\u003e"
            }
          ],
          "value": "An improper authorization\u00a0vulnerability in GitHub Trigger Comment Control\u00a0in Google\u00a0Cloud Build\u00a0prior to 2026-1-26\u00a0allows a remote attacker\u00a0to execute arbitrary code in the build environment.\n\nThis vulnerability was patched on 26 January 2026, and no customer action is needed."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-165",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-165 File Manipulation"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "CLEAR",
            "subAvailabilityImpact": "LOW",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "ACTIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/U:Clear",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863 Incorrect Authorization (Permission Bypass)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-03T16:22:54.502Z",
        "orgId": "f45cbf4e-4146-4068-b7e1-655ffc2c548c",
        "shortName": "GoogleCloud"
      },
      "references": [
        {
          "url": "https://docs.cloud.google.com/build/docs/release-notes#March_03_2026"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Google Cloud Build Comment Control Bypass",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f45cbf4e-4146-4068-b7e1-655ffc2c548c",
    "assignerShortName": "GoogleCloud",
    "cveId": "CVE-2026-3136",
    "datePublished": "2026-03-03T16:22:54.502Z",
    "dateReserved": "2026-02-24T17:29:16.705Z",
    "dateUpdated": "2026-03-04T04:55:36.155Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-3136\",\"sourceIdentifier\":\"f45cbf4e-4146-4068-b7e1-655ffc2c548c\",\"published\":\"2026-03-03T17:16:19.160\",\"lastModified\":\"2026-03-05T21:44:42.407\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An improper authorization\u00a0vulnerability in GitHub Trigger Comment Control\u00a0in Google\u00a0Cloud Build\u00a0prior to 2026-1-26\u00a0allows a remote attacker\u00a0to execute arbitrary code in the build environment.\\n\\nThis vulnerability was patched on 26 January 2026, and no customer action is needed.\"}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"f45cbf4e-4146-4068-b7e1-655ffc2c548c\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/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:Clear\",\"baseScore\":8.6,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"ACTIVE\",\"vulnConfidentialityImpact\":\"HIGH\",\"vulnIntegrityImpact\":\"HIGH\",\"vulnAvailabilityImpact\":\"HIGH\",\"subConfidentialityImpact\":\"LOW\",\"subIntegrityImpact\":\"LOW\",\"subAvailabilityImpact\":\"LOW\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"CLEAR\"}}],\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"f45cbf4e-4146-4068-b7e1-655ffc2c548c\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-863\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:google:cloud_build:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2026-1-26\",\"matchCriteriaId\":\"79BCC7BB-7D52-40A1-A604-969908D01860\"}]}]}],\"references\":[{\"url\":\"https://docs.cloud.google.com/build/docs/release-notes#March_03_2026\",\"source\":\"f45cbf4e-4146-4068-b7e1-655ffc2c548c\",\"tags\":[\"Release Notes\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-3136\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-03-03T16:38:02.406014Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-03-03T16:38:14.528Z\"}}], \"cna\": {\"title\": \"Google Cloud Build Comment Control Bypass\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"inspector-ambitious\"}], \"impacts\": [{\"capecId\": \"CAPEC-165\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-165 File Manipulation\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 8.6, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/U:Clear\", \"exploitMaturity\": \"NOT_DEFINED\", \"providerUrgency\": \"CLEAR\", \"userInteraction\": \"ACTIVE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"LOW\", \"vulnIntegrityImpact\": \"HIGH\", \"subAvailabilityImpact\": \"LOW\", \"vulnAvailabilityImpact\": \"HIGH\", \"subConfidentialityImpact\": \"LOW\", \"vulnConfidentialityImpact\": \"HIGH\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Google Cloud\", \"product\": \"Cloud Build\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"1/26/2026\", \"versionType\": \"date\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://docs.cloud.google.com/build/docs/release-notes#March_03_2026\"}], \"x_generator\": {\"engine\": \"Vulnogram 0.5.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"An improper authorization\\u00a0vulnerability in GitHub Trigger Comment Control\\u00a0in Google\\u00a0Cloud Build\\u00a0prior to 2026-1-26\\u00a0allows a remote attacker\\u00a0to execute arbitrary code in the build environment.\\n\\nThis vulnerability was patched on 26 January 2026, and no customer action is needed.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"An improper authorization\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003e\u0026nbsp;vulnerability in \u003c/span\u003eGitHub Trigger Comment Control\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003e\u0026nbsp;in \u003c/span\u003eGoogle\u0026nbsp;Cloud Build\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003e\u0026nbsp;\u003c/span\u003eprior to 2026-1-26\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003e\u0026nbsp;allows \u003c/span\u003ea remote attacker\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003e\u0026nbsp;to \u003c/span\u003eexecute arbitrary code in the build environment.\u003cbr\u003e\u003cbr\u003e\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eThis vulnerability was \u003c/span\u003e\u003cspan style=\\\"background-color: rgb(237, 192, 45);\\\"\u003epatched\u003c/span\u003e\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003e on 26 January 2026, and no customer action is needed.\u003c/span\u003e\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-863\", \"description\": \"CWE-863 Incorrect Authorization (Permission Bypass)\"}]}], \"providerMetadata\": {\"orgId\": \"f45cbf4e-4146-4068-b7e1-655ffc2c548c\", \"shortName\": \"GoogleCloud\", \"dateUpdated\": \"2026-03-03T16:22:54.502Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-3136\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-04T04:55:36.155Z\", \"dateReserved\": \"2026-02-24T17:29:16.705Z\", \"assignerOrgId\": \"f45cbf4e-4146-4068-b7e1-655ffc2c548c\", \"datePublished\": \"2026-03-03T16:22:54.502Z\", \"assignerShortName\": \"GoogleCloud\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

GHSA-P8RP-XFQ6-8F8M

Vulnerability from github – Published: 2026-03-03 18:31 – Updated: 2026-03-06 00:31

Details

An improper authorization vulnerability in GitHub Trigger Comment Control in Google Cloud Build prior to 2026-1-26 allows a remote attacker to execute arbitrary code in the build environment.

This vulnerability was patched on 26 January 2026, and no customer action is needed.

Severity ?

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

8.6 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/U:Clear

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-3136"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-03T17:16:19Z",
    "severity": "HIGH"
  },
  "details": "An improper authorization\u00a0vulnerability in GitHub Trigger Comment Control\u00a0in Google\u00a0Cloud Build\u00a0prior to 2026-1-26\u00a0allows a remote attacker\u00a0to execute arbitrary code in the build environment.\n\nThis vulnerability was patched on 26 January 2026, and no customer action is needed.",
  "id": "GHSA-p8rp-xfq6-8f8m",
  "modified": "2026-03-06T00:31:29Z",
  "published": "2026-03-03T18:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3136"
    },
    {
      "type": "WEB",
      "url": "https://docs.cloud.google.com/build/docs/release-notes#March_03_2026"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/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:Clear",
      "type": "CVSS_V4"
    }
  ]
}

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

CVE-2026-3136 (GCVE-0-2026-3136)

GHSA-P8RP-XFQ6-8F8M

Tags

Sightings

Nomenclature