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CVE-2021-22242

Date: August 25, 2021

Insufficient input sanitization in Mermaid markdown in GitLab CE/EE version 11.4 and up allows an attacker to exploit a stored cross-site scripting vulnerability via a specially-crafted markdown

Language: Ruby

Severity Score

Related Resources (6)

https://nvd.nist.gov/vuln/detail/CVE-2021-22242
https://hackerone.com/reports/1212822
https://gitlab.com/gitlab-org/gitlab/-/issues/332528
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-22242
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22242.json
https://www.mend.io/vulnerability-database/CVE-2021-22242

Severity Score

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): SINGLE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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