CVE-2026-86258: falha de alta gravidade em jupyter nbviewer
nbviewer through 1.0.1 Path Traversal via LocalFileHandler
Publicada em · Atualizada em
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21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 8.2epss 0.5%
nbviewer through 1.0.1 contains a path traversal vulnerability in LocalFileHandler.can_show() that uses string-prefix comparison instead of proper path validation. Attackers can read files from sibling directories outside the configured root by requesting paths that share the root as a textual prefix, disclosing unintended notebooks and credentials.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Produtos afetados
jupyter · nbviewerReferências
https://github.com/jupyter/nbviewerhttps://github.com/jupyter/nbviewer/blob/1.0.1/nbviewer/providers/local/handlers.py#L92-L107https://github.com/jupyter/nbviewer/commit/aad36106f72a1ca7721310c6fccc677ce4c744a5https://github.com/jupyter/nbviewer/issues/1115https://www.vulncheck.com/advisories/nbviewer-through-1.0.1-path-traversal-via-localfilehandler