Staging Environment: Content and features may be unstable or change without notice.
Search for vulnerabilities
Vulnerability details: VCID-a4ch-e314-wfc8
Vulnerability ID VCID-a4ch-e314-wfc8
Aliases CVE-2021-32855
GHSA-vfmp-9999-6wqj
Summary Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vditor is a browser-side Markdown editor. Versions prior to 3.8.7 is vulnerable to copy-paste cross-site scripting (XSS). For this particular type of XSS, the victim needs to be fooled into copying a malicious payload into the text editor. Version 3.8.7 contains a patch for this issue.
Status Published
Exploitability None
Weighted Severity None
Risk None
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 0.00287 https://api.first.org/data/v1/epss?cve=CVE-2021-32855
epss 0.00287 https://api.first.org/data/v1/epss?cve=CVE-2021-32855
cvssv3.1 6.1 https://github.com/Vanessa219/vditor
generic_textual MODERATE https://github.com/Vanessa219/vditor
cvssv3.1 6.1 https://github.com/Vanessa219/vditor/commit/1b2382d7f8a4ee509d9245db4450d926a0b24146
generic_textual MODERATE https://github.com/Vanessa219/vditor/commit/1b2382d7f8a4ee509d9245db4450d926a0b24146
ssvc Track https://github.com/Vanessa219/vditor/commit/1b2382d7f8a4ee509d9245db4450d926a0b24146
cvssv3.1 6.1 https://github.com/Vanessa219/vditor/issues/1085
generic_textual MODERATE https://github.com/Vanessa219/vditor/issues/1085
ssvc Track https://github.com/Vanessa219/vditor/issues/1085
cvssv3.1 6.1 https://nvd.nist.gov/vuln/detail/CVE-2021-32855
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2021-32855
cvssv3.1 6.1 https://securitylab.github.com/advisories/GHSL-2021-1006-vditor
generic_textual MODERATE https://securitylab.github.com/advisories/GHSL-2021-1006-vditor
cvssv3.1 6.1 https://securitylab.github.com/advisories/GHSL-2021-1006-vditor/
ssvc Track https://securitylab.github.com/advisories/GHSL-2021-1006-vditor/
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-32855
https://github.com/Vanessa219/vditor
https://github.com/Vanessa219/vditor/commit/1b2382d7f8a4ee509d9245db4450d926a0b24146
https://github.com/Vanessa219/vditor/issues/1085
https://securitylab.github.com/advisories/GHSL-2021-1006-vditor
https://securitylab.github.com/advisories/GHSL-2021-1006-vditor/
CVE-2021-32855 https://nvd.nist.gov/vuln/detail/CVE-2021-32855
GHSA-vfmp-9999-6wqj https://github.com/advisories/GHSA-vfmp-9999-6wqj
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/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:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/Vanessa219/vditor/commit/1b2382d7f8a4ee509d9245db4450d926a0b24146
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-03-10T21:00:23Z/ Found at https://github.com/Vanessa219/vditor/commit/1b2382d7f8a4ee509d9245db4450d926a0b24146
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/Vanessa219/vditor/issues/1085
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-03-10T21:00:23Z/ Found at https://github.com/Vanessa219/vditor/issues/1085
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-32855
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:C/C:L/I:L/A:N Found at https://securitylab.github.com/advisories/GHSL-2021-1006-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:N/UI:R/S:C/C:L/I:L/A:N Found at https://securitylab.github.com/advisories/GHSL-2021-1006-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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-03-10T21:00:23Z/ Found at https://securitylab.github.com/advisories/GHSL-2021-1006-vditor/
Exploit Prediction Scoring System (EPSS)
Percentile 0.52356
EPSS Score 0.00287
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-02T04:44:04.863426+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/vditor/CVE-2021-32855.yml 38.6.0