Vulnerability in Kramdown_project Kramdown
CVE-2021-28834
Kramdown before 2.3.1 does not restrict Rouge formatters to the Rouge::Formatters namespace, and thus arbitrary classes can be instantiated.
EPSS: 0.028 (84.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Kramdown_project Kramdown
- Debian Debian_linux — versions 10.0
- Fedoraproject Fedora — versions 32, 33, 34
- N/a — versions n/a
References
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
Frequently asked questions
- What is CVE-2021-28834?
- CVE-2021-28834 is a critical-severity vulnerability in Kramdown_project Kramdown. CVSS score: 9.8/10. Published 2021-03-19.
- How severe is CVE-2021-28834?
- Critical severity. CVSS v3 base score is 9.8 out of 10.