Cyber Resilience

CVE-2023-3374

CriticalUpdated

Published: 05 September 2023

Published
05 September 2023
Modified
22 May 2026
KEV Added
—
Patch
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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0012 31.0th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-3374 is a critical-severity Incomplete List of Disallowed Inputs (CWE-184) vulnerability in Bookreen Bookreen. Its CVSS base score is 9.8 (Critical).

Operationally, ranked at the 31.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Incomplete List of Disallowed Inputs vulnerability in Unisign Bookreen allows Privilege Escalation. This issue affects Bookreen: before 3.0.0.

CWE(s)
CWE-184NVD-CWE-Other

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

bookreen
bookreen
≤ 3.0.0

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-8 Spam Protection
addresses: CWE-184

Spam filters rely on evolving blacklists, signatures, and heuristics of disallowed message patterns; keeping them updated per the control directly mitigates incomplete disallowed-input lists.

References