CVE-2021-3906

PoC —

CVSS 3.1

6.5 medium

EPSS

<1%p50

Published

Oct 27, 2021 (Oct 27, 2021)

Modified

Jun 17, 2026

Description

bookstack is vulnerable to Unrestricted Upload of File with Dangerous Type

Vendors: bookstackapp
Products: bookstack
Weakness: CWE-434
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (0.7%)

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