CVE-2024-56522

State: Published
Severity: 7.5 High
Published: Dec 27, 2024
Updated: Nov 3, 2025
Reserved: Dec 27, 2024

Description

An issue was discovered in TCPDF before 6.8.0. unserializeTCPDFtag uses != (aka loose comparison) and does not use a constant-time function to compare TCPDF tag hashes.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	CISA-ADP

Weaknesses

CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')

Affected Products

Product	Versions
tcpdftecnick	before 6.8.0Affected

References

https://tcpdf.org/
https://github.com/tecnickcom/TCPDF/compare/6.7.8...6.8.0
https://github.com/tecnickcom/TCPDF/commit/d54b97cec33f4f1a5ad81119a82085cad93cec89
https://www.php.net/manual/en/types.comparisons.php
https://lists.debian.org/debian-lts-announce/2025/06/msg00004.html

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