How severe is CVE-2023-3374?

CVE-2023-3374 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-3374 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-3374?

CVE-2023-3374 affects Bookreen. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-3374?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-3374 published?

CVE-2023-3374 was published on 2023-09-05 and last updated on 2026-06-17.

CVE-2023-3374

CVE-2023-3374 is a critical-severity vulnerability in Bookreen with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-184.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-184
Affected product: Bookreen
Published: 2023-09-05
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2023-3374?: Incomplete List of Disallowed Inputs vulnerability in Unisign Bookreen allows Privilege Escalation. This issue affects Bookreen: before 3.0.0.
How severe is CVE-2023-3374?: CVE-2023-3374 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-3374 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-3374?: CVE-2023-3374 affects Bookreen. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-3374?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-3374 published?: CVE-2023-3374 was published on 2023-09-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:bookreen:bookreen:*:*:*:*:*:*:*:*

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