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Vulnerability details: VCID-mpfp-y1hz-c3cq
Vulnerability ID VCID-mpfp-y1hz-c3cq
Aliases CVE-2021-39185
GHSA-52cf-226f-rhr6
Summary Origin Validation Error The original `CORS` implementation and `CORSConfig` are deprecated.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-346 Origin Validation Error
System Score Found at
epss 0.00169 https://api.first.org/data/v1/epss?cve=CVE-2021-39185
cvssv3.1 9.1 https://github.com/http4s/http4s
generic_textual CRITICAL https://github.com/http4s/http4s
cvssv3.1 9.1 https://github.com/http4s/http4s/releases/tag/v0.23.2
generic_textual CRITICAL https://github.com/http4s/http4s/releases/tag/v0.23.2
cvssv3.1 9.1 https://github.com/http4s/http4s/security/advisories/GHSA-52cf-226f-rhr6
generic_textual CRITICAL https://github.com/http4s/http4s/security/advisories/GHSA-52cf-226f-rhr6
cvssv3.1 9.1 https://nvd.nist.gov/vuln/detail/CVE-2021-39185
generic_textual CRITICAL https://nvd.nist.gov/vuln/detail/CVE-2021-39185
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-39185
https://github.com/http4s/http4s
https://github.com/http4s/http4s/releases/tag/v0.23.2
CVE-2021-39185 https://nvd.nist.gov/vuln/detail/CVE-2021-39185
GHSA-52cf-226f-rhr6 https://github.com/advisories/GHSA-52cf-226f-rhr6
GHSA-52cf-226f-rhr6 https://github.com/http4s/http4s/security/advisories/GHSA-52cf-226f-rhr6
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/http4s/http4s
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:L/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/http4s/http4s/releases/tag/v0.23.2
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:L/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/http4s/http4s/security/advisories/GHSA-52cf-226f-rhr6
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:L/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-39185
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 0.37844
EPSS Score 0.00169
Published At May 30, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-05-30T20:55:47.362141+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.http4s/http4s-core_2.12/CVE-2021-39185.yml 38.6.0