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Vulnerability details: VCID-uwjs-9kjy-jqcp
Vulnerability ID VCID-uwjs-9kjy-jqcp
Aliases CVE-2021-4172
GHSA-7x22-pmw5-66mq
Summary Cross-site Scripting in showdoc
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
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 0.00195 https://api.first.org/data/v1/epss?cve=CVE-2021-4172
epss 0.00195 https://api.first.org/data/v1/epss?cve=CVE-2021-4172
epss 0.00195 https://api.first.org/data/v1/epss?cve=CVE-2021-4172
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-7x22-pmw5-66mq
cvssv3.1 5.4 https://github.com/star7th/showdoc
generic_textual MODERATE https://github.com/star7th/showdoc
cvssv3.1 5.4 https://github.com/star7th/showdoc/commit/409c8a1208bbb847046a9496303192980f2e6219
generic_textual MODERATE https://github.com/star7th/showdoc/commit/409c8a1208bbb847046a9496303192980f2e6219
cvssv3.1 5.4 https://huntr.dev/bounties/c041b693-877b-4456-b463-19e4c9456eee
generic_textual MODERATE https://huntr.dev/bounties/c041b693-877b-4456-b463-19e4c9456eee
cvssv3.1 5.4 https://nvd.nist.gov/vuln/detail/CVE-2021-4172
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2021-4172
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-4172
https://github.com/star7th/showdoc
https://github.com/star7th/showdoc/commit/409c8a1208bbb847046a9496303192980f2e6219
https://huntr.dev/bounties/c041b693-877b-4456-b463-19e4c9456eee
CVE-2021-4172 https://nvd.nist.gov/vuln/detail/CVE-2021-4172
GHSA-7x22-pmw5-66mq https://github.com/advisories/GHSA-7x22-pmw5-66mq
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/star7th/showdoc
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:L/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/star7th/showdoc/commit/409c8a1208bbb847046a9496303192980f2e6219
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:L/UI:R/S:C/C:L/I:L/A:N Found at https://huntr.dev/bounties/c041b693-877b-4456-b463-19e4c9456eee
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:L/UI:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-4172
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 0.41306
EPSS Score 0.00195
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T20:27:42.458304+00:00 GHSA Importer Import https://github.com/advisories/GHSA-7x22-pmw5-66mq 38.6.0