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.
Published: 2024-12-27
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4199-1 tcpdf security update
Debian DSA Debian DSA DSA-5933-1 tcpdf security update
EUVD EUVD EUVD-2024-3618 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.
Github GHSA Github GHSA GHSA-w95c-7994-ghpr TCPDF has incorrect comparison
History

Mon, 03 Nov 2025 20:30:00 +0000

Type Values Removed Values Added
References

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.0009}

epss

{'score': 0.00073}


Thu, 17 Apr 2025 02:30:00 +0000

Type Values Removed Values Added
First Time appeared Tcpdf Project
Tcpdf Project tcpdf
CPEs cpe:2.3:a:tcpdf_project:tcpdf:*:*:*:*:*:*:*:*
Vendors & Products Tcpdf Project
Tcpdf Project tcpdf

Mon, 30 Dec 2024 16:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-843
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 27 Dec 2024 04:45:00 +0000

Type Values Removed Values Added
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.
References

Subscriptions

Tcpdf Project Tcpdf
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-11-03T19:32:21.561Z

Reserved: 2024-12-27T00:00:00.000Z

Link: CVE-2024-56522

cve-icon Vulnrichment

Updated: 2024-12-30T15:48:35.679Z

cve-icon NVD

Status : Modified

Published: 2024-12-27T05:15:08.130

Modified: 2025-11-03T20:16:53.093

Link: CVE-2024-56522

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses