Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2026-04-06 14:49

Modified

2026-04-06 15:13

Summary

Parse Server: Cloud function validator bypass via prototype chain traversal

Details

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.67 and 9.7.0, an attacker can bypass Cloud Function validator access controls by appending "prototype.constructor" to the function name in the URL. When a Cloud Function handler is declared using the function keyword and its validator is a plain object or arrow function, the trigger store traversal resolves the handler through its own prototype chain while the validator store fails to mirror this traversal, causing all access control enforcement to be skipped. This allows unauthenticated callers to invoke Cloud Functions that are meant to be protected by validators such as requireUser, requireMaster, or custom validation logic. This issue has been patched in versions 8.6.67 and 9.7.0.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "parse",
        "purl": "pkg:bitnami/parse"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.6.67"
            },
            {
              "introduced": "9.0.0"
            },
            {
              "fixed": "9.7.0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/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"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-34532"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*"
    ],
    "severity": "Critical"
  },
  "details": "Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.67 and 9.7.0, an attacker can bypass Cloud Function validator access controls by appending \"prototype.constructor\" to the function name in the URL. When a Cloud Function handler is declared using the function keyword and its validator is a plain object or arrow function, the trigger store traversal resolves the handler through its own prototype chain while the validator store fails to mirror this traversal, causing all access control enforcement to be skipped. This allows unauthenticated callers to invoke Cloud Functions that are meant to be protected by validators such as requireUser, requireMaster, or custom validation logic. This issue has been patched in versions 8.6.67 and 9.7.0.",
  "id": "BIT-parse-2026-34532",
  "modified": "2026-04-06T15:13:09.641Z",
  "published": "2026-04-06T14:49:31.298Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/parse-community/parse-server/commit/4fc48cf28f22eea200d74d883505f485234a48d7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/parse-community/parse-server/commit/dc59e272665644083c5b7f6862d88ce1ef0b2674"
    },
    {
      "type": "WEB",
      "url": "https://github.com/parse-community/parse-server/pull/10342"
    },
    {
      "type": "WEB",
      "url": "https://github.com/parse-community/parse-server/pull/10343"
    },
    {
      "type": "WEB",
      "url": "https://github.com/parse-community/parse-server/security/advisories/GHSA-vpj2-qq7w-5qq6"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34532"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Parse Server: Cloud function validator bypass via prototype chain traversal"
}

CVE-2026-34532 (GCVE-0-2026-34532)

Vulnerability from cvelistv5 – Published: 2026-03-31 14:42 – Updated: 2026-03-31 17:21

Title

Parse Server: Cloud function validator bypass via prototype chain traversal

Summary

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.67 and 9.7.0-alpha.11, an attacker can bypass Cloud Function validator access controls by appending "prototype.constructor" to the function name in the URL. When a Cloud Function handler is declared using the function keyword and its validator is a plain object or arrow function, the trigger store traversal resolves the handler through its own prototype chain while the validator store fails to mirror this traversal, causing all access control enforcement to be skipped. This allows unauthenticated callers to invoke Cloud Functions that are meant to be protected by validators such as requireUser, requireMaster, or custom validation logic. This issue has been patched in versions 8.6.67 and 9.7.0-alpha.11.

Severity ?

9.1 (Critical)


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

CWE

CWE-863 - Incorrect Authorization

Assigner

GitHub_M

References

URL

Tags

	https://github.com/parse-community/parse-server/s…	x_refsource_CONFIRM
	https://github.com/parse-community/parse-server/p…	x_refsource_MISC
	https://github.com/parse-community/parse-server/p…	x_refsource_MISC
	https://github.com/parse-community/parse-server/c…	x_refsource_MISC
	https://github.com/parse-community/parse-server/c…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	parse-community	parse-server	Affected: < 8.6.67 Affected: >= 9.0.0, < 9.7.0-alpha.11

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-34532",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-31T17:21:00.433792Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-31T17:21:09.681Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "parse-server",
          "vendor": "parse-community",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 8.6.67"
            },
            {
              "status": "affected",
              "version": "\u003e= 9.0.0, \u003c 9.7.0-alpha.11"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.67 and 9.7.0-alpha.11, an attacker can bypass Cloud Function validator access controls by appending \"prototype.constructor\" to the function name in the URL. When a Cloud Function handler is declared using the function keyword and its validator is a plain object or arrow function, the trigger store traversal resolves the handler through its own prototype chain while the validator store fails to mirror this traversal, causing all access control enforcement to be skipped. This allows unauthenticated callers to invoke Cloud Functions that are meant to be protected by validators such as requireUser, requireMaster, or custom validation logic. This issue has been patched in versions 8.6.67 and 9.7.0-alpha.11."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863: Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-31T14:42:10.481Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/parse-community/parse-server/security/advisories/GHSA-vpj2-qq7w-5qq6",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/parse-community/parse-server/security/advisories/GHSA-vpj2-qq7w-5qq6"
        },
        {
          "name": "https://github.com/parse-community/parse-server/pull/10342",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/parse-community/parse-server/pull/10342"
        },
        {
          "name": "https://github.com/parse-community/parse-server/pull/10343",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/parse-community/parse-server/pull/10343"
        },
        {
          "name": "https://github.com/parse-community/parse-server/commit/4fc48cf28f22eea200d74d883505f485234a48d7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/parse-community/parse-server/commit/4fc48cf28f22eea200d74d883505f485234a48d7"
        },
        {
          "name": "https://github.com/parse-community/parse-server/commit/dc59e272665644083c5b7f6862d88ce1ef0b2674",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/parse-community/parse-server/commit/dc59e272665644083c5b7f6862d88ce1ef0b2674"
        }
      ],
      "source": {
        "advisory": "GHSA-vpj2-qq7w-5qq6",
        "discovery": "UNKNOWN"
      },
      "title": "Parse Server: Cloud function validator bypass via prototype chain traversal"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-34532",
    "datePublished": "2026-03-31T14:42:10.481Z",
    "dateReserved": "2026-03-30T16:03:31.048Z",
    "dateUpdated": "2026-03-31T17:21:09.681Z",
    "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

Vulnerability from bitnami_vulndb

CVE-2026-34532 (GCVE-0-2026-34532)

Tags

Sightings

Nomenclature