Is CVE-2023-24720 actively exploited?

No active exploitation of CVE-2023-24720 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-24720 be exploited remotely?

Yes. CVE-2023-24720 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-24720?

CVE-2023-24720 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-24720

CWE-434Published: April 5, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

An arbitrary file upload vulnerability in readium-js v0.32.0 allows attackers to execute arbitrary code via uploading a crafted EPUB file.

NVD Source

Risk Analysis

The readium-js library is vulnerable to arbitrary file uploads, allowing attackers to execute code by uploading a specially crafted EPUB file. This critical vulnerability could lead to full system compromise.

No public exploit is known, and it is not in the KEV database. The vulnerability is remotely exploitable with low complexity.

Recommended Action

Upgrade readium-js to a version that implements strict file type validation and sanitization for uploads.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-24720 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.