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Vulnerability details: VCID-uh57-j7t7-wueh
Vulnerability ID VCID-uh57-j7t7-wueh
Aliases CVE-2021-4103
GHSA-cxm3-v4mv-6mh8
Summary Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Cross-site Scripting (XSS) - Stored in GitHub repository vanessa219/vdit
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-4103
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-4103
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-4103
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-4103
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-cxm3-v4mv-6mh8
cvssv3.1 5.4 https://github.com/vanessa219/vditor
generic_textual MODERATE https://github.com/vanessa219/vditor
cvssv3.1 5.4 https://github.com/vanessa219/vditor/commit/8d4d0889dd72b2f839e93a49db3da3a370416c7d
generic_textual MODERATE https://github.com/vanessa219/vditor/commit/8d4d0889dd72b2f839e93a49db3da3a370416c7d
cvssv3.1 5.4 https://github.com/Vanessa219/vditor/issues/1133
generic_textual MODERATE https://github.com/Vanessa219/vditor/issues/1133
cvssv3.1 5.4 https://huntr.dev/bounties/67b980af-7357-4879-9448-a926c6474225
generic_textual MODERATE https://huntr.dev/bounties/67b980af-7357-4879-9448-a926c6474225
cvssv3.1 5.4 https://nvd.nist.gov/vuln/detail/CVE-2021-4103
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2021-4103
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-4103
https://github.com/vanessa219/vditor
https://github.com/vanessa219/vditor/commit/8d4d0889dd72b2f839e93a49db3da3a370416c7d
https://github.com/Vanessa219/vditor/issues/1133
https://huntr.dev/bounties/67b980af-7357-4879-9448-a926c6474225
CVE-2021-4103 https://nvd.nist.gov/vuln/detail/CVE-2021-4103
GHSA-cxm3-v4mv-6mh8 https://github.com/advisories/GHSA-cxm3-v4mv-6mh8
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/vanessa219/vditor
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/vanessa219/vditor/commit/8d4d0889dd72b2f839e93a49db3da3a370416c7d
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/Vanessa219/vditor/issues/1133
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/67b980af-7357-4879-9448-a926c6474225
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-2021-4103
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 0.42771
EPSS Score 0.00206
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-02T04:41:04.721321+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/vditor/CVE-2021-4103.yml 38.6.0