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Vulnerability details: VCID-am4w-8by3-aygq
Vulnerability ID VCID-am4w-8by3-aygq
Aliases CVE-2021-3993
GHSA-6pqm-xvfc-w7p4
Summary showdoc is vulnerable to Cross-Site Request Forgery (CSRF)
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-352 Cross-Site Request Forgery (CSRF)
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 0.00117 https://api.first.org/data/v1/epss?cve=CVE-2021-3993
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-6pqm-xvfc-w7p4
cvssv3.1 6.5 https://github.com/star7th/showdoc
generic_textual MODERATE https://github.com/star7th/showdoc
cvssv3.1 6.5 https://github.com/star7th/showdoc/commit/654e871a3923e79076818a9a03533fe88222c871
generic_textual MODERATE https://github.com/star7th/showdoc/commit/654e871a3923e79076818a9a03533fe88222c871
cvssv3.1 6.5 https://huntr.dev/bounties/0aa84736-139b-4ae7-becf-604f7f60b1c9
generic_textual MODERATE https://huntr.dev/bounties/0aa84736-139b-4ae7-becf-604f7f60b1c9
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2021-3993
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2021-3993
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-3993
https://github.com/star7th/showdoc
https://github.com/star7th/showdoc/commit/654e871a3923e79076818a9a03533fe88222c871
https://huntr.dev/bounties/0aa84736-139b-4ae7-becf-604f7f60b1c9
CVE-2021-3993 https://nvd.nist.gov/vuln/detail/CVE-2021-3993
GHSA-6pqm-xvfc-w7p4 https://github.com/advisories/GHSA-6pqm-xvfc-w7p4
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/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:N/UI:R/S:U/C:N/I:H/A:N Found at https://github.com/star7th/showdoc/commit/654e871a3923e79076818a9a03533fe88222c871
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:R/S:U/C:N/I:H/A:N Found at https://huntr.dev/bounties/0aa84736-139b-4ae7-becf-604f7f60b1c9
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:R/S:U/C:N/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-3993
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 0.30104
EPSS Score 0.00117
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T20:27:14.125384+00:00 GHSA Importer Import https://github.com/advisories/GHSA-6pqm-xvfc-w7p4 38.6.0