CVE-2021-28834
kramdown: Kramdown before 2.3.1 does not restrict Rouge formatters to the Rouge::Formatters namespace, and thus arbitrary class...
CVE-2021-28834 is fixed in 2 products on 1 platform, first by kramdown 1.17.0-4ubuntu0.2, released March 19, 2021. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
n/a
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0270
85th percentile
Kramdown before 2.3.1 does not restrict Rouge formatters to the Rouge::Formatters namespace, and thus arbitrary classes can be instantiated.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| kramdown · Ubuntu 20.04 LTS (focal) | 1.17.0-4ubuntu0.2 | kramdown 1.17.0-4ubuntu0.2 | Mar 19, 2021 |
| ruby-kramdown · Ubuntu 20.04 LTS (focal) | 1.17.0-4ubuntu0.2 | ruby-kramdown 1.17.0-4ubuntu0.2 | Mar 19, 2021 |
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