CVE-2026-55429 (GCVE-0-2026-55429)

Vulnerability from cvelistv5 – Published: 2026-07-08 00:00 – Updated: 2026-07-08 14:41
VLAI
Title
Coder's workspace app upsert allows cross-workspace agent rebinding via user-controlled app ID
Summary
Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, `UpsertWorkspaceApp` overwrites an existing app's `agent_id` on a primary-key conflict and `insertAgentApp` accepts the app ID from the provisioner's `CompleteJob` payload without verifying it belongs to the workspace being built. `CompleteJob` runs under `dbauthz.AsProvisionerd` so the authorization layer does not block the cross-workspace upsert. Exploitation requires elevated access as a template author or external provisioner operator. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 verifies that any existing `workspace_apps` row matching the supplied ID belongs to the workspace being built and rejects cross-workspace agent reassignment. No known workarounds are available.
Severity
8.7 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 14:41 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version CPE status
coder coder Affected: >= 2.34.0, < 2.34.2
Affected: >= 2.33.0, < 2.33.8
Affected: >= 2.30.0, < 2.32.7
Affected: < 2.29.17
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-55429",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-08T14:41:33.806014Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-08T14:41:39.988Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "coder",
          "vendor": "coder",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.34.0, \u003c 2.34.2"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.33.0, \u003c 2.33.8"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.30.0, \u003c 2.32.7"
            },
            {
              "status": "affected",
              "version": "\u003c 2.29.17"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, `UpsertWorkspaceApp` overwrites an existing app\u0027s `agent_id` on a primary-key conflict and `insertAgentApp` accepts the app ID from the provisioner\u0027s `CompleteJob` payload without verifying it belongs to the workspace being built. `CompleteJob` runs under `dbauthz.AsProvisionerd` so the authorization layer does not block the cross-workspace upsert. Exploitation requires elevated access as a template author or external provisioner operator. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 verifies that any existing `workspace_apps` row matching the supplied ID belongs to the workspace being built and rejects cross-workspace agent reassignment. No known workarounds are available."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-08T00:00:33.785Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/coder/coder/security/advisories/GHSA-9rjw-3gwp-f59v",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/coder/coder/security/advisories/GHSA-9rjw-3gwp-f59v"
        },
        {
          "name": "https://github.com/coder/coder/pull/26103",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/coder/coder/pull/26103"
        },
        {
          "name": "https://github.com/coder/coder/releases/tag/v2.29.17",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/coder/coder/releases/tag/v2.29.17"
        },
        {
          "name": "https://github.com/coder/coder/releases/tag/v2.32.7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/coder/coder/releases/tag/v2.32.7"
        },
        {
          "name": "https://github.com/coder/coder/releases/tag/v2.33.8",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/coder/coder/releases/tag/v2.33.8"
        },
        {
          "name": "https://github.com/coder/coder/releases/tag/v2.34.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/coder/coder/releases/tag/v2.34.2"
        }
      ],
      "source": {
        "advisory": "GHSA-9rjw-3gwp-f59v",
        "discovery": "UNKNOWN"
      },
      "title": "Coder\u0027s workspace app upsert allows cross-workspace agent rebinding via user-controlled app ID"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-55429",
    "datePublished": "2026-07-08T00:00:33.785Z",
    "dateReserved": "2026-06-16T21:59:57.017Z",
    "dateUpdated": "2026-07-08T14:41:39.988Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-55429",
      "date": "2026-09-21",
      "epss": "0.00508",
      "percentile": "0.42233"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "coder",
                "vendor": "coder",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003e= 2.34.0, \u003c 2.34.2"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 2.33.0, \u003c 2.33.8"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 2.30.0, \u003c 2.32.7"
                  },
                  {
                    "status": "affected",
                    "version": "\u003c 2.29.17"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:go:*:*",
                    "matchCriteriaId": "F97FAF48-192E-4814-82A5-085C44F1D261",
                    "versionEndExcluding": "2.29.17",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:go:*:*",
                    "matchCriteriaId": "7ABD4A9B-6AE8-47D8-A1B7-91E42EE0481B",
                    "versionEndExcluding": "2.32.7",
                    "versionStartIncluding": "2.30.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:go:*:*",
                    "matchCriteriaId": "F759EEF3-6EAE-475B-85F8-38E7D7B47438",
                    "versionEndExcluding": "2.33.8",
                    "versionStartIncluding": "2.33.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:go:*:*",
                    "matchCriteriaId": "397A02BF-6CF6-40B1-B792-D7CB9D229050",
                    "versionEndExcluding": "2.34.2",
                    "versionStartIncluding": "2.34.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, `UpsertWorkspaceApp` overwrites an existing app\u0027s `agent_id` on a primary-key conflict and `insertAgentApp` accepts the app ID from the provisioner\u0027s `CompleteJob` payload without verifying it belongs to the workspace being built. `CompleteJob` runs under `dbauthz.AsProvisionerd` so the authorization layer does not block the cross-workspace upsert. Exploitation requires elevated access as a template author or external provisioner operator. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 verifies that any existing `workspace_apps` row matching the supplied ID belongs to the workspace being built and rejects cross-workspace agent reassignment. No known workarounds are available."
          }
        ],
        "id": "CVE-2026-55429",
        "lastModified": "2026-07-08T19:43:31.533",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 8.7,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "HIGH",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.3,
              "impactScore": 5.8,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-55429",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-08T14:41:33.806014Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-07-08T00:16:33.597",
        "references": [
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Issue Tracking",
              "Patch"
            ],
            "url": "https://github.com/coder/coder/pull/26103"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Release Notes"
            ],
            "url": "https://github.com/coder/coder/releases/tag/v2.29.17"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Release Notes"
            ],
            "url": "https://github.com/coder/coder/releases/tag/v2.32.7"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Release Notes"
            ],
            "url": "https://github.com/coder/coder/releases/tag/v2.33.8"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Release Notes"
            ],
            "url": "https://github.com/coder/coder/releases/tag/v2.34.2"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://github.com/coder/coder/security/advisories/GHSA-9rjw-3gwp-f59v"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-639"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-07-30T16:39:20Z",
      "cve": "CVE-2026-55429",
      "id": "CVE-2026-55429",
      "initial_release_date": "2026-07-30T16:39:20Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-55429",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-55429.json",
      "version": "2"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-55429",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-07-08T14:41:33.806014Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-07-08T14:41:36.491Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "coder",
              "vendor": "coder",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003e= 2.34.0, \u003c 2.34.2"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 2.33.0, \u003c 2.33.8"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 2.30.0, \u003c 2.32.7"
                },
                {
                  "status": "affected",
                  "version": "\u003c 2.29.17"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, `UpsertWorkspaceApp` overwrites an existing app\u0027s `agent_id` on a primary-key conflict and `insertAgentApp` accepts the app ID from the provisioner\u0027s `CompleteJob` payload without verifying it belongs to the workspace being built. `CompleteJob` runs under `dbauthz.AsProvisionerd` so the authorization layer does not block the cross-workspace upsert. Exploitation requires elevated access as a template author or external provisioner operator. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 verifies that any existing `workspace_apps` row matching the supplied ID belongs to the workspace being built and rejects cross-workspace agent reassignment. No known workarounds are available."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 8.7,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "HIGH",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-639",
                  "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-07-08T00:00:33.785Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/coder/coder/security/advisories/GHSA-9rjw-3gwp-f59v",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/coder/coder/security/advisories/GHSA-9rjw-3gwp-f59v"
            },
            {
              "name": "https://github.com/coder/coder/pull/26103",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/coder/coder/pull/26103"
            },
            {
              "name": "https://github.com/coder/coder/releases/tag/v2.29.17",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/coder/coder/releases/tag/v2.29.17"
            },
            {
              "name": "https://github.com/coder/coder/releases/tag/v2.32.7",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/coder/coder/releases/tag/v2.32.7"
            },
            {
              "name": "https://github.com/coder/coder/releases/tag/v2.33.8",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/coder/coder/releases/tag/v2.33.8"
            },
            {
              "name": "https://github.com/coder/coder/releases/tag/v2.34.2",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/coder/coder/releases/tag/v2.34.2"
            }
          ],
          "source": {
            "advisory": "GHSA-9rjw-3gwp-f59v",
            "discovery": "UNKNOWN"
          },
          "title": "Coder\u0027s workspace app upsert allows cross-workspace agent rebinding via user-controlled app ID"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-55429",
        "datePublished": "2026-07-08T00:00:33.785Z",
        "dateReserved": "2026-06-16T21:59:57.017Z",
        "dateUpdated": "2026-07-08T14:41:39.988Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.