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Vulnerability details: VCID-7spb-rcbx-w7gn
Vulnerability ID VCID-7spb-rcbx-w7gn
Aliases CVE-2026-31856
GHSA-q3vj-96h2-gwvg
Summary Parse Server vulnerable to SQL injection via `Increment` operation on nested object field in PostgreSQL A SQL injection vulnerability exists in the PostgreSQL storage adapter when processing `Increment` operations on nested object fields using dot notation (e.g., `stats.counter`). The `amount` value is interpolated directly into the SQL query without parameterization or type validation. An attacker who can send write requests to the Parse Server REST API can inject arbitrary SQL subqueries to read any data from the database, bypassing CLPs and ACLs. MongoDB deployments are not affected.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
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 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2026-31856
epss 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2026-31856
epss 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2026-31856
cvssv3.1_qr CRITICAL https://github.com/advisories/GHSA-q3vj-96h2-gwvg
cvssv4 9.3 https://github.com/parse-community/parse-server
generic_textual CRITICAL https://github.com/parse-community/parse-server
cvssv4 9.3 https://github.com/parse-community/parse-server/releases/tag/8.6.29
generic_textual CRITICAL https://github.com/parse-community/parse-server/releases/tag/8.6.29
ssvc Track https://github.com/parse-community/parse-server/releases/tag/8.6.29
cvssv4 9.3 https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.3
generic_textual CRITICAL https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.3
ssvc Track https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.3
cvssv3.1_qr CRITICAL https://github.com/parse-community/parse-server/security/advisories/GHSA-q3vj-96h2-gwvg
cvssv4 9.3 https://github.com/parse-community/parse-server/security/advisories/GHSA-q3vj-96h2-gwvg
generic_textual CRITICAL https://github.com/parse-community/parse-server/security/advisories/GHSA-q3vj-96h2-gwvg
ssvc Track https://github.com/parse-community/parse-server/security/advisories/GHSA-q3vj-96h2-gwvg
cvssv4 9.3 https://nvd.nist.gov/vuln/detail/CVE-2026-31856
generic_textual CRITICAL https://nvd.nist.gov/vuln/detail/CVE-2026-31856
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-31856
https://github.com/parse-community/parse-server
https://github.com/parse-community/parse-server/releases/tag/8.6.29
https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.3
CVE-2026-31856 https://nvd.nist.gov/vuln/detail/CVE-2026-31856
GHSA-q3vj-96h2-gwvg https://github.com/advisories/GHSA-q3vj-96h2-gwvg
GHSA-q3vj-96h2-gwvg https://github.com/parse-community/parse-server/security/advisories/GHSA-q3vj-96h2-gwvg
No exploits are available.
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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:H/VA:N/SC:N/SI:N/SA:N Found at https://github.com/parse-community/parse-server/releases/tag/8.6.29
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:T/P:M/B:A/M:M/D:T/2026-03-12T20:11:18Z/ Found at https://github.com/parse-community/parse-server/releases/tag/8.6.29
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N Found at https://github.com/parse-community/parse-server/releases/tag/9.6.0-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)

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Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2026-03-12T20:11:18Z/ Found at https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.3
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N Found at https://github.com/parse-community/parse-server/security/advisories/GHSA-q3vj-96h2-gwvg
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:T/P:M/B:A/M:M/D:T/2026-03-12T20:11:18Z/ Found at https://github.com/parse-community/parse-server/security/advisories/GHSA-q3vj-96h2-gwvg
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N Found at https://nvd.nist.gov/vuln/detail/CVE-2026-31856
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 0.13313
EPSS Score 0.00042
Published At June 5, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-02T04:51:38.428779+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/parse-server/CVE-2026-31856.yml 38.6.0