CVE-2024-56522

HIGH EPSS 43.9%
Published Dec 27, 20241y ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Dec 27, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
43.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-843

Affected Products 1

VendorProductVersionRange
tcpdf_projecttcpdf* <6.8.0

References 5

  • github.com https://github.com/tecnickcom/TCPDF/commit/d54b97cec33f4f1a5ad81119a82085cad93cec89
    Patch
  • github.com https://github.com/tecnickcom/TCPDF/compare/6.7.8...6.8.0
    Issue Tracking
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/06/msg00004.html
  • tcpdf.org https://tcpdf.org
    Product
  • php.net https://www.php.net/manual/en/types.comparisons.php
    Not Applicable

Remediation

  • github.com https://github.com/tecnickcom/TCPDF/commit/d54b97cec33f4f1a5ad81119a82085cad93cec89
    Patch