CVE-2024-56522

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published12/27/2024

Last Modified11/3/2025

Sourcenvd

Honeypot Sightings0

Affected Products

tcpdf_project:tcpdf

Weaknesses (CWE)

CWE-843

References

https://github.com/tecnickcom/TCPDF/commit/d54b97cec33f4f1a5ad81119a82085cad93cec89(cve@mitre.org)

https://github.com/tecnickcom/TCPDF/compare/6.7.8...6.8.0(cve@mitre.org)

https://tcpdf.org(cve@mitre.org)

https://www.php.net/manual/en/types.comparisons.php(cve@mitre.org)

https://lists.debian.org/debian-lts-announce/2025/06/msg00004.html(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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