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Vulnerability details: VCID-8gsh-j1b9-3bew
Vulnerability ID VCID-8gsh-j1b9-3bew
Aliases CVE-2026-30947
GHSA-7ch5-98q2-7289
Summary Parse Server has a bypass of class-level permissions in LiveQuery Class-level permissions (CLP) are not enforced for LiveQuery subscriptions. An unauthenticated or unauthorized client can subscribe to any LiveQuery-enabled class and receive real-time events for all objects, regardless of CLP restrictions. All Parse Server deployments that use LiveQuery with class-level permissions are affected. Data intended to be restricted by CLP is leaked to unauthorized subscribers in real time.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-863 Incorrect Authorization
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00019 https://api.first.org/data/v1/epss?cve=CVE-2026-30947
epss 0.00019 https://api.first.org/data/v1/epss?cve=CVE-2026-30947
epss 0.00019 https://api.first.org/data/v1/epss?cve=CVE-2026-30947
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-7ch5-98q2-7289
cvssv4 8.7 https://github.com/parse-community/parse-server
generic_textual HIGH https://github.com/parse-community/parse-server
cvssv4 8.7 https://github.com/parse-community/parse-server/releases/tag/8.6.16
generic_textual HIGH https://github.com/parse-community/parse-server/releases/tag/8.6.16
ssvc Track https://github.com/parse-community/parse-server/releases/tag/8.6.16
cvssv4 8.7 https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.3
generic_textual HIGH https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.3
ssvc Track https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.3
cvssv3.1_qr HIGH https://github.com/parse-community/parse-server/security/advisories/GHSA-7ch5-98q2-7289
cvssv4 8.7 https://github.com/parse-community/parse-server/security/advisories/GHSA-7ch5-98q2-7289
generic_textual HIGH https://github.com/parse-community/parse-server/security/advisories/GHSA-7ch5-98q2-7289
ssvc Track https://github.com/parse-community/parse-server/security/advisories/GHSA-7ch5-98q2-7289
cvssv4 8.7 https://nvd.nist.gov/vuln/detail/CVE-2026-30947
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2026-30947
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-30947
https://github.com/parse-community/parse-server
https://github.com/parse-community/parse-server/releases/tag/8.6.16
https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.3
CVE-2026-30947 https://nvd.nist.gov/vuln/detail/CVE-2026-30947
GHSA-7ch5-98q2-7289 https://github.com/advisories/GHSA-7ch5-98q2-7289
GHSA-7ch5-98q2-7289 https://github.com/parse-community/parse-server/security/advisories/GHSA-7ch5-98q2-7289
No exploits are available.
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://github.com/parse-community/parse-server
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://github.com/parse-community/parse-server/releases/tag/8.6.16
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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adjacent

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Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-11T14:42:12Z/ Found at https://github.com/parse-community/parse-server/releases/tag/8.6.16
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.3
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

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Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-11T14:42:12Z/ Found at https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.3
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://github.com/parse-community/parse-server/security/advisories/GHSA-7ch5-98q2-7289
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

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present

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Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-11T14:42:12Z/ Found at https://github.com/parse-community/parse-server/security/advisories/GHSA-7ch5-98q2-7289
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://nvd.nist.gov/vuln/detail/CVE-2026-30947
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

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none

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Exploit Prediction Scoring System (EPSS)
Percentile 0.05309
EPSS Score 0.00019
Published At June 5, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-02T04:51:38.502833+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/parse-server/CVE-2026-30947.yml 38.6.0