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CVE-2021-28833 — Vulnerability in qiita-markdown — CVE Details

MEDIUM

qiita-markdown Cross-site Scripting vulnerability

Published August 2, 2021Updated November 8, 2023Source: osv

Summary

Increments Qiita::Markdown before 0.34.0 allows XSS via a crafted gist link, a different vulnerability than CVE-2021-28796.

Advisory Timeline

  • First published August 2, 2021 (1897 days ago).
  • Last revised November 8, 2023 — 827 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Bundler
Update qiita-markdown to 0.34.0 or later
gem install qiita-markdown -v 0.34.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: rubygems (1).

PackageEcosystemAffectedFixed In
qiita-markdown
rubygems
0.0.1, 0.0.2, 0.0.3, 0.0.4 (+62 more)0.34.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-79
    Cross-site Scripting (XSS)MITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 6.1 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

Frequently Asked Questions

What is CVE-2021-28833?
qiita-markdown Cross-site Scripting vulnerability This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 6.1/10).
How do I check if my project is affected by CVE-2021-28833?
CVE-2021-28833 affects qiita-markdown. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2021-28833 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
6.1

Exploitation requires specific conditions or has limited impact. Remediate within weeks.

Also Known As

GHSA-9p29-94hp-8rvc

Related CVEs

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