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CVE-2021-3906

Good to know:

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Date: October 27, 2021

bookstack is vulnerable to Unrestricted Upload of File with Dangerous Type

Language: PHP

Severity Score

Related Resources (4)

https://nvd.nist.gov/vuln/detail/CVE-2021-3906
https://github.com/bookstackapp/bookstack/commit/64937ab826b56d086af9ecea532510d37520ebc8
https://huntr.dev/bounties/f115bdf5-c06b-4627-a6fa-ba6904a43ba3
https://www.mend.io/vulnerability-database/CVE-2021-3906

Severity Score

Weakness Type (CWE)

Unrestricted Upload of File with Dangerous Type

CWE-434

Top Fix

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Upgrade Version

Upgrade to version ssddanbrown/bookstack - dev-oidc_group_sync;ssddanbrown/bookstack - dev-code_manager_updates;ssddanbrown/bookstack - no_fix;ssddanbrown/bookstack - v21.10.1;ssddanbrown/bookstack - dev-auth_review;ssddanbrown/bookstack - dev-editor_trim_enhancement;ssddanbrown/bookstack - v0.31.x-dev;ssddanbrown/bookstack - dev-dependabot/composer/dompdf/dompdf-2.0.3;ssddanbrown/bookstack - dev-app_url_requests;ssddanbrown/bookstack - dev-dependabot/npm_and_yarn/markdown-it-12.3.2;ssddanbrown/bookstack - v0.5.0;ssddanbrown/bookstack - dev-more_lexical_fixes;ssddanbrown/bookstack - v21.08.4;ssddanbrown/bookstack - dev-item_permission_revamp;ssddanbrown/bookstack - dev-group_sync_comma_escaping

Learn More

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): SINGLE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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