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

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

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