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Vulnerability details: VCID-2sjs-7xx9-g3ej
Vulnerability ID VCID-2sjs-7xx9-g3ej
Aliases CVE-2020-5251
GHSA-h4mf-75hf-67w4
Summary Incorrect Authorization In parser-server, you can fetch all the users objects, by using regex in the NoSQL query. Using the NoSQL, you can use a regex on `sessionToken` and find valid accounts this way.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (5)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-863 Incorrect Authorization
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-285 Improper Authorization
System Score Found at
epss 0.00313 https://api.first.org/data/v1/epss?cve=CVE-2020-5251
epss 0.00313 https://api.first.org/data/v1/epss?cve=CVE-2020-5251
epss 0.00313 https://api.first.org/data/v1/epss?cve=CVE-2020-5251
epss 0.00313 https://api.first.org/data/v1/epss?cve=CVE-2020-5251
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-h4mf-75hf-67w4
cvssv3.1 7.7 https://github.com/parse-community/parse-server/commit/3a3a5eee5ffa48da1352423312cb767de14de269
generic_textual HIGH https://github.com/parse-community/parse-server/commit/3a3a5eee5ffa48da1352423312cb767de14de269
cvssv3.1 7.7 https://github.com/parse-community/parse-server/security/advisories/GHSA-h4mf-75hf-67w4
cvssv3.1_qr HIGH https://github.com/parse-community/parse-server/security/advisories/GHSA-h4mf-75hf-67w4
generic_textual HIGH https://github.com/parse-community/parse-server/security/advisories/GHSA-h4mf-75hf-67w4
cvssv3.1 7.7 https://nvd.nist.gov/vuln/detail/CVE-2020-5251
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2020-5251
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2020-5251
https://github.com/parse-community/parse-server/commit/3a3a5eee5ffa48da1352423312cb767de14de269
https://github.com/parse-community/parse-server/security/advisories/GHSA-h4mf-75hf-67w4
CVE-2020-5251 https://nvd.nist.gov/vuln/detail/CVE-2020-5251
GHSA-h4mf-75hf-67w4 https://github.com/advisories/GHSA-h4mf-75hf-67w4
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N Found at https://github.com/parse-community/parse-server/commit/3a3a5eee5ffa48da1352423312cb767de14de269
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N Found at https://github.com/parse-community/parse-server/security/advisories/GHSA-h4mf-75hf-67w4
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-5251
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.54702
EPSS Score 0.00313
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:19:50.267895+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/parse-server/CVE-2020-5251.yml 38.6.0