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Vulnerability details: VCID-p34v-j1s6-a7hn
Vulnerability ID VCID-p34v-j1s6-a7hn
Aliases CVE-2026-30835
GHSA-9cp7-3q5w-j92g
Summary parse-server: Malformed `$regex` query leaks database error details in API response A malformed $regex query parameter (e.g. `[abc)` causes the database to return a structured error object that is passed unsanitized through the API response. This leaks database internals such as error messages, error codes, code names, cluster timestamps, and topology details. The vulnerability is exploitable by any client that can send query requests, depending on the deployment's permission configuration.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-209 Generation of Error Message Containing Sensitive Information
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 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2026-30835
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2026-30835
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-9cp7-3q5w-j92g
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/8.6.7
generic_textual MODERATE https://github.com/parse-community/parse-server/releases/tag/8.6.7
ssvc Track https://github.com/parse-community/parse-server/releases/tag/8.6.7
cvssv4 6.9 https://github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.6
generic_textual MODERATE https://github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.6
ssvc Track https://github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.6
cvssv3.1_qr MODERATE https://github.com/parse-community/parse-server/security/advisories/GHSA-9cp7-3q5w-j92g
cvssv4 6.9 https://github.com/parse-community/parse-server/security/advisories/GHSA-9cp7-3q5w-j92g
generic_textual MODERATE https://github.com/parse-community/parse-server/security/advisories/GHSA-9cp7-3q5w-j92g
ssvc Track https://github.com/parse-community/parse-server/security/advisories/GHSA-9cp7-3q5w-j92g
cvssv4 6.9 https://nvd.nist.gov/vuln/detail/CVE-2026-30835
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2026-30835
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-30835
https://github.com/parse-community/parse-server
https://github.com/parse-community/parse-server/releases/tag/8.6.7
https://github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.6
CVE-2026-30835 https://nvd.nist.gov/vuln/detail/CVE-2026-30835
GHSA-9cp7-3q5w-j92g https://github.com/advisories/GHSA-9cp7-3q5w-j92g
GHSA-9cp7-3q5w-j92g https://github.com/parse-community/parse-server/security/advisories/GHSA-9cp7-3q5w-j92g
No exploits are available.
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/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:L/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://github.com/parse-community/parse-server/releases/tag/8.6.7
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/2026-03-09T20:28:44Z/ Found at https://github.com/parse-community/parse-server/releases/tag/8.6.7
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.6
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/2026-03-09T20:28:44Z/ Found at https://github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.6
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://github.com/parse-community/parse-server/security/advisories/GHSA-9cp7-3q5w-j92g
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/2026-03-09T20:28:44Z/ Found at https://github.com/parse-community/parse-server/security/advisories/GHSA-9cp7-3q5w-j92g
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://nvd.nist.gov/vuln/detail/CVE-2026-30835
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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Exploit Prediction Scoring System (EPSS)
Percentile 0.02912
EPSS Score 0.00014
Published At June 5, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-02T04:51:24.207906+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/parse-server/CVE-2026-30835.yml 38.6.0