CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS
Percentile
90.4%
Ghost CMS 4.0.0 to 4.3.2 contains a DOM cross-site scripting vulnerability. An unused endpoint added during the development of 4.0.0 allows attackers to gain access by getting logged-in users to click a link containing malicious code.
id: CVE-2021-29484
info:
name: Ghost CMS <=4.32 - Cross-Site Scripting
author: rootxharsh,iamnoooob
severity: medium
description: Ghost CMS 4.0.0 to 4.3.2 contains a DOM cross-site scripting vulnerability. An unused endpoint added during the development of 4.0.0 allows attackers to gain access by getting logged-in users to click a link containing malicious code.
impact: |
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript code in the context of the victim's browser, leading to potential data theft, session hijacking, or defacement of the affected website.
remediation: This issue has been fixed in 4.3.3.
reference:
- https://github.com/TryGhost/Ghost/security/advisories/GHSA-9fgx-q25h-jxrg
- https://www.npmjs.com/package/ghost
- https://forum.ghost.org/t/critical-security-update-available-for-ghost-4-x/22290
- https://nvd.nist.gov/vuln/detail/CVE-2021-29484
- https://github.com/ARPSyndicate/cvemon
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
cvss-score: 6.8
cve-id: CVE-2021-29484
cwe-id: CWE-79
epss-score: 0.01483
epss-percentile: 0.86785
cpe: cpe:2.3:a:ghost:ghost:*:*:*:*:*:node.js:*:*
metadata:
max-request: 1
vendor: ghost
product: ghost
framework: node.js
shodan-query: http.component:"ghost"
tags: cve2021,cve,xss,ghost,node.js
http:
- method: GET
path:
- "{{BaseURL}}/ghost/preview"
matchers-condition: and
matchers:
- type: word
part: body
words:
- 'XMLHttpRequest.prototype.open'
- type: word
part: header
words:
- 'text/html'
- type: status
status:
- 200
# digest: 4a0a004730450221008708553f92fa889fe94e2e1e0179bc7fce9e53b6ee2b269d9a14da5c3992d9e702201716126335928b1f023b3fe60ebe030afac3410a41de7837f279ac714969465a:922c64590222798bb761d5b6d8e72950
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS
Percentile
90.4%