PT-2026-35591 · Rubygems · Yard

Publicado 2026-04-17 · Atualizado 2026-04-17

OSV

CVSS v4.0

6.9

Média

Vetor base

AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Impact

A path traversal vulnerability was discovered in YARD <= 0.9.41 when using yard server to serve documentation. This bug would allow unsanitized HTTP requests to access arbitrary files on the machine of a yard server host under certain conditions.

The original patch in GHSA-xfhh-rx56-rxcr was incorrectly applied.

Patches

Please upgrade to YARD v0.9.42 immediately if you are relying on yard server to host documentation in any untrusted environments without WEBrick and rely on --docroot.

Workarounds

For users who cannot upgrade, it is possible to perform path sanitization of HTTP requests at your webserver level. WEBrick, for example, can perform such sanitization by default (which you can use via yard server -s webrick), as can certain rules in your webserver configuration.

Exploit

Correção

Path traversal

Enumeração de Fraquezas

CWE-22

Identificadores relacionados

GHSA-3JFP-46X4-XGFJ

Produtos afetados

Yard

Referências · 6

• 🔥 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/yard/CVE-2026-41493.yml · Exploit
• https://github.com/lsegal/yard/security/advisories/GHSA-3jfp-46x4-xgfj · Nota
• https://github.com/lsegal/yard/releases/tag/v0.9.42 · Nota
• https://github.com/lsegal/yard · Nota
• https://osv.dev/vulnerability/GHSA-3jfp-46x4-xgfj · Aviso do Fabricante
• https://nvd.nist.gov/vuln/detail/CVE-2026-41493 · Nota de Segurança