P4Verified

CVE-2026-27905: bentoml before 1.4.36 (exclusive); +1 more affected products

CVE-2026-27905. CVSS 3.1 base score 7.8 (HIGH, NVD). EPSS 0.00215 (percentile 0.10832), scored 2026-10-05.

Affected technology

bentoml · before 1.4.36 (exclusive)
bentoml

BentoML · < 1.4.36
bentoml

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Local · No privileges required · No user interaction required

What an attacker can do

An attacker can create a malicious bento/model tar file containing a symlink pointing outside the extraction directory, followed by a regular file that writes through the symlink, achieving arbitrary file write on the host filesystem. Vendor/CNA’s CVSS 4.0 assessment (base score 8.6/10) rates confidentiality, integrity and availability impact as high.

Published 2026-10-07 11:52:02.340192+00:00

CWE: CWE-59
CCR priority: 31.3 /100 (P4)
CVSS 3.1: 7.8 /10 · CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H · NVD
EPSS: 0.00215 · percentile 0.10893 · 2026-10-06
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-07 11:53:15.413517+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-07 11:49:32.540646+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-27905.html