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Vulnerability details: VCID-eqcs-tmpq-9ub7
Vulnerability ID VCID-eqcs-tmpq-9ub7
Aliases CVE-2021-3776
GHSA-m4hj-wg2r-qpcr
Summary showdoc is vulnerable to Cross-Site Request Forgery (CSRF)
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
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 0.00112 https://api.first.org/data/v1/epss?cve=CVE-2021-3776
epss 0.00112 https://api.first.org/data/v1/epss?cve=CVE-2021-3776
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-m4hj-wg2r-qpcr
cvssv3.1 4.3 https://github.com/star7th/showdoc
generic_textual MODERATE https://github.com/star7th/showdoc
cvssv3.1 4.3 https://github.com/star7th/showdoc/commit/67093c879a6563aa6ee08003177777d1975e2351
generic_textual MODERATE https://github.com/star7th/showdoc/commit/67093c879a6563aa6ee08003177777d1975e2351
cvssv3.1 4.3 https://huntr.dev/bounties/e0edf27d-437e-44fe-907a-df020f385304
generic_textual MODERATE https://huntr.dev/bounties/e0edf27d-437e-44fe-907a-df020f385304
cvssv3.1 4.3 https://nvd.nist.gov/vuln/detail/CVE-2021-3776
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2021-3776
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-3776
https://github.com/star7th/showdoc
https://github.com/star7th/showdoc/commit/67093c879a6563aa6ee08003177777d1975e2351
https://huntr.dev/bounties/e0edf27d-437e-44fe-907a-df020f385304
CVE-2021-3776 https://nvd.nist.gov/vuln/detail/CVE-2021-3776
GHSA-m4hj-wg2r-qpcr https://github.com/advisories/GHSA-m4hj-wg2r-qpcr
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L 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:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L Found at https://github.com/star7th/showdoc/commit/67093c879a6563aa6ee08003177777d1975e2351
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:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L Found at https://huntr.dev/bounties/e0edf27d-437e-44fe-907a-df020f385304
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:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L Found at https://nvd.nist.gov/vuln/detail/CVE-2021-3776
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 0.2922
EPSS Score 0.00112
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T20:27:08.668718+00:00 GHSA Importer Import https://github.com/advisories/GHSA-m4hj-wg2r-qpcr 38.6.0