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Vulnerability details: VCID-7xk3-yn6w-nfd1
Vulnerability ID VCID-7xk3-yn6w-nfd1
Aliases CVE-2026-30972
GHSA-775h-3xrc-c228
Summary Parse Server has a rate limit bypass via batch request endpoint Parse Server's rate limiting middleware is applied at the Express middleware layer, but the batch request endpoint (`/batch`) processes sub-requests internally by routing them directly through the Promise router, bypassing Express middleware including rate limiting. An attacker can bundle multiple requests targeting a rate-limited endpoint into a single batch request to circumvent the configured rate limit. Any Parse Server deployment that relies on the built-in rate limiting feature is affected.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-799 Improper Control of Interaction Frequency
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 0.00062 https://api.first.org/data/v1/epss?cve=CVE-2026-30972
epss 0.00062 https://api.first.org/data/v1/epss?cve=CVE-2026-30972
epss 0.00062 https://api.first.org/data/v1/epss?cve=CVE-2026-30972
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-775h-3xrc-c228
cvssv4 6.9 https://github.com/parse-community/parse-server
generic_textual MODERATE https://github.com/parse-community/parse-server
cvssv4 6.9 https://github.com/parse-community/parse-server/releases/tag/8.6.23
generic_textual MODERATE https://github.com/parse-community/parse-server/releases/tag/8.6.23
ssvc Track https://github.com/parse-community/parse-server/releases/tag/8.6.23
cvssv4 6.9 https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.10
generic_textual MODERATE https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.10
ssvc Track https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.10
cvssv3.1_qr MODERATE https://github.com/parse-community/parse-server/security/advisories/GHSA-775h-3xrc-c228
cvssv4 6.9 https://github.com/parse-community/parse-server/security/advisories/GHSA-775h-3xrc-c228
generic_textual MODERATE https://github.com/parse-community/parse-server/security/advisories/GHSA-775h-3xrc-c228
ssvc Track https://github.com/parse-community/parse-server/security/advisories/GHSA-775h-3xrc-c228
cvssv4 6.9 https://nvd.nist.gov/vuln/detail/CVE-2026-30972
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2026-30972
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-30972
https://github.com/parse-community/parse-server
https://github.com/parse-community/parse-server/releases/tag/8.6.23
https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.10
CVE-2026-30972 https://nvd.nist.gov/vuln/detail/CVE-2026-30972
GHSA-775h-3xrc-c228 https://github.com/advisories/GHSA-775h-3xrc-c228
GHSA-775h-3xrc-c228 https://github.com/parse-community/parse-server/security/advisories/GHSA-775h-3xrc-c228
No exploits are available.
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L 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:N/VI:N/VA:N/SC:N/SI:N/SA:L Found at https://github.com/parse-community/parse-server/releases/tag/8.6.23
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: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-11T15:53:44Z/ Found at https://github.com/parse-community/parse-server/releases/tag/8.6.23
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L Found at https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.10
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/2026-03-11T15:53:44Z/ Found at https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.10
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L Found at https://github.com/parse-community/parse-server/security/advisories/GHSA-775h-3xrc-c228
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

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Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-11T15:53:44Z/ Found at https://github.com/parse-community/parse-server/security/advisories/GHSA-775h-3xrc-c228
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L Found at https://nvd.nist.gov/vuln/detail/CVE-2026-30972
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

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present

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passive

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Exploit Prediction Scoring System (EPSS)
Percentile 0.19502
EPSS Score 0.00062
Published At June 5, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-02T04:51:35.534655+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/parse-server/CVE-2026-30972.yml 38.6.0