Arbitrary Code Execution in Rdoc

HIGH 7.0CVE-2021-31799 · GHSA-ggxm-pgc9-g7fp · Published 30/07/2021 · updated 17/06/2026

In short

CVE-2021-31799 is a HIGH (CVSS 7.0) vulnerability affecting rdoc, jd edwards enterpriseone tools (oracle), rdoc (ruby-lang).
Chance of exploitation in the next 30 days (EPSS): 1.5%, higher than 73.9% of all vulnerabilities.
Fix: update to 6.1.2.1, 6.2.1.1, 6.3.1, 9.2.6.1 or later.

Package	Affected versions	Patched versions
rdoc RubyGems	`≥ 3.11, < 6.1.2.1≥ 6.2.0, < 6.2.1.1≥ 6.3.0, < 6.3.1`	`6.1.2.16.2.1.16.3.1`
jd edwards enterpriseone tools oracle	`< 9.2.6.1`	`9.2.6.1`
rdoc ruby-lang	`≥ 3.11, < 6.3.1`	`6.3.1`

In RDoc 3.11 through 6.x before 6.3.1, as distributed with Ruby through 3.0.1, it is possible to execute arbitrary code via | and tags in a filename.

NVD description

In RDoc 3.11 through 6.x before 6.3.1, as distributed with Ruby through 3.0.1, it is possible to execute arbitrary code via | and tags in a filename.

Running one of these products? Scan your site to see whether it exposes a vulnerable version.