CVE-2024-56521

CRITICAL
Published Dec 27, 2024 Modified Apr 21, 2025 CWE-295

Description

An issue was discovered in TCPDF before 6.8.0. If libcurl is used, CURLOPT_SSL_VERIFYHOST and CURLOPT_SSL_VERIFYPEER are set unsafely.

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CVSS v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-295 CWE-295

Affected Products

Vendor Product
tcpdf_project tcpdf

References

Frequently Asked Questions

What is CVE-2024-56521? +
An issue was discovered in TCPDF before 6.8.0. If libcurl is used, CURLOPT_SSL_VERIFYHOST and CURLOPT_SSL_VERIFYPEER are set unsafely. It has a CVSS v3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2024-56521? +
CVE-2024-56521 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.
What products are affected by CVE-2024-56521? +
CVE-2024-56521 affects products from tcpdf_project, specifically: tcpdf. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-56521? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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