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Vulnerability details: VCID-hzdm-3uza-tuah
Vulnerability ID VCID-hzdm-3uza-tuah
Aliases CVE-2021-43805
GHSA-qxmr-qxh6-2cc9
Summary ReDos vulnerability on guest checkout email validation
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1333 Inefficient Regular Expression Complexity
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
System Score Found at
epss 0.00118 https://api.first.org/data/v1/epss?cve=CVE-2021-43805
epss 0.00118 https://api.first.org/data/v1/epss?cve=CVE-2021-43805
epss 0.00118 https://api.first.org/data/v1/epss?cve=CVE-2021-43805
epss 0.00118 https://api.first.org/data/v1/epss?cve=CVE-2021-43805
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-qxmr-qxh6-2cc9
cvssv3.1 7.5 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/solidus_core/CVE-2021-43805.yml
generic_textual HIGH https://github.com/rubysec/ruby-advisory-db/blob/master/gems/solidus_core/CVE-2021-43805.yml
cvssv3.1 7.5 https://github.com/solidusio/solidus
generic_textual HIGH https://github.com/solidusio/solidus
cvssv3.1 7.5 https://github.com/solidusio/solidus/commit/6be174c955fad84017ca67589c676526bc5ade71
generic_textual HIGH https://github.com/solidusio/solidus/commit/6be174c955fad84017ca67589c676526bc5ade71
cvssv3.1 7.5 https://github.com/solidusio/solidus/commit/9867153e01e3c3b898cdbcedd7b43375ea922401
generic_textual HIGH https://github.com/solidusio/solidus/commit/9867153e01e3c3b898cdbcedd7b43375ea922401
cvssv3 7.5 https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9
cvssv3.1 7.5 https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9
cvssv3.1_qr HIGH https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9
generic_textual HIGH https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-43805
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2021-43805
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-43805
https://github.com/solidusio/solidus
https://github.com/solidusio/solidus/commit/6be174c955fad84017ca67589c676526bc5ade71
https://github.com/solidusio/solidus/commit/9867153e01e3c3b898cdbcedd7b43375ea922401
CVE-2021-43805 https://nvd.nist.gov/vuln/detail/CVE-2021-43805
CVE-2021-43805.YML https://github.com/rubysec/ruby-advisory-db/blob/master/gems/solidus_core/CVE-2021-43805.yml
GHSA-qxmr-qxh6-2cc9 https://github.com/advisories/GHSA-qxmr-qxh6-2cc9
GHSA-qxmr-qxh6-2cc9 https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/rubysec/ruby-advisory-db/blob/master/gems/solidus_core/CVE-2021-43805.yml
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:N/I:N/A:H Found at https://github.com/solidusio/solidus
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:N/I:N/A:H Found at https://github.com/solidusio/solidus/commit/6be174c955fad84017ca67589c676526bc5ade71
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:N/I:N/A:H Found at https://github.com/solidusio/solidus/commit/9867153e01e3c3b898cdbcedd7b43375ea922401
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:N/I:N/A:H Found at https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9
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:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-43805
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 0.30306
EPSS Score 0.00118
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T20:27:15.161721+00:00 GHSA Importer Import https://github.com/advisories/GHSA-qxmr-qxh6-2cc9 38.6.0