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Vulnerabilidades / CVE-2021-28834

crítica

CVE-2021-28834

rubygem-kramdown: allows arbitrary classes to be instantiated

Publicada Modificada
En la Trivy database desde, como mínimo, el 24 oct 2026, 07:11 UTCNo consta cuándo entró antes de ese build.

Severidad por fuente

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GHSA9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

La etiqueta propia de Trivy es CRITICAL. Crítica según NVD, Ruby Advisory DB. Más baja según GHSA (alta), Red Hat (media), Ubuntu (media).

Descripción

Kramdown before 2.3.1 does not restrict Rouge formatters to the Rouge::Formatters namespace, and thus arbitrary classes can be instantiated.

Paquetes afectados y versiones corregidas

FuentePaqueteCorregido en
rubygems::Ruby Advisory Databasekramdown>= 2.3.1
debian 10ruby-kramdown1.17.0-1+deb10u2
debian 11ruby-kramdown2.3.0-5
debian 12ruby-kramdown2.3.0-5
debian 13ruby-kramdown2.3.0-5
debian 14ruby-kramdown2.3.0-5
echoruby-kramdown2.3.0-5
rubygems::GitHub Security Advisory RubyGemskramdown2.3.1
ubuntu 20.04ruby-kramdown1.17.0-4ubuntu0.2
ubuntu 20.04-ESMruby-kramdown1.17.0-4ubuntu0.2

Referencias

Las 18 referencias

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.