CVE-2024-22640: Tecnickcom/tcpdf Denial of Service Vulnerability

MODERATE
Advisory Identifier: GHSA-mx3p-fhpw-x6rv
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CWE-1333
Published
Advisory Summary

CVE-2024-22640 is a MODERATE denial of service vulnerability (CWE-1333: Inefficient Regular Expression Complexity) affecting Tecnickcom/tcpdf libraries in the Packagist ecosystem. The issue involves tcpdf vulnerable to regular expression denial of service. Remediation is available by upgrading affected packages to version 6.7.5.

CVE-2024-22640 at a Glance

CVE Identifier CVE-2024-22640
GHSA Identifier GHSA-mx3p-fhpw-x6rv
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-1333: Inefficient Regular Expression Complexity
Affected Product Tecnickcom/tcpdf
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix CVE-2024-22640

To remediate this vulnerability, upgrade all affected Tecnickcom/tcpdf dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

tecnickcom/tcpdf fixed: 6.7.5 
Upgrade tecnickcom/tcpdf to 6.7.5
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for tecnickcom/tcpdf

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-22640, inspect your project dependencies for Tecnickcom/tcpdf:

inspect dependencies for tecnickcom/tcpdf

Analyze the terminal output to locate any version of Tecnickcom/tcpdf in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.7.5), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-1333: Inefficient Regular Expression Complexity, where the product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential. In Tecnickcom/tcpdf, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

TCPDF version <= 6.7.4 is vulnerable to ReDoS (Regular Expression Denial of Service) if parsing an untrusted HTML page with a crafted color.

CVE-2024-22640 Affected Tecnickcom/tcpdf Versions

1 component(s)
Fixed Versions:
6.7.5
Product / Package Ecosystem Affected Versions Fixed Version
tecnickcom/tcpdf
 Packagist
< 6.7.5
6.7.5

References

NVD — CVE-2024-22640 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-22640
Security Fix Commit FIX COMMIT
https://github.com/tecnickcom/TCPDF/commit/05f3a28f4a7905019469e040cf77e53d6aa7f679
Tecnickcom/tcpdf Source Repository REPOSITORY
https://github.com/tecnickcom/TCPDF
Tecnickcom/tcpdf Source Repository REPOSITORY
https://github.com/zunak/CVE-2024-22640
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2025/06/msg00004.html
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LIB3R2WB7XPW2I4PGVMZ3VLFLRHOK4RB
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LIB3R2WB7XPW2I4PGVMZ3VLFLRHOK4RB

Frequently Asked Questions

What is CVE-2024-22640?
CVE-2024-22640 is a security vulnerability in Tecnickcom/tcpdf involving TCPDF vulnerable to Regular Expression Denial of Service under CWE-1333: Inefficient Regular Expression Complexity.
Which Tecnickcom/tcpdf versions are affected?
Affected versions include releases prior to 6.7.5 across affected packages: tecnickcom/tcpdf.
What version fixes CVE-2024-22640?
Upgrading to 6.7.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is tecnickcom/tcpdf affected?
Yes, tecnickcom/tcpdf is affected in releases prior to 6.7.5. Upgrade your dependency to 6.7.5 or later.
What CWE is associated with CVE-2024-22640?
CVE-2024-22640 is classified under CWE-1333: Inefficient Regular Expression Complexity (The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.).
How can I check Packagist dependencies for CVE-2024-22640?
Run the dependency tree command: 'inspect dependencies for tecnickcom/tcpdf'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-mx3p-fhpw-x6rv",
  "modified" : "2025-11-04T19:45:34Z",
  "published" : "2024-04-19T18:31:11Z",
  "aliases" : [ "CVE-2024-22640" ],
  "summary" : "TCPDF vulnerable to Regular Expression Denial of Service",
  "details" : "TCPDF version <= 6.7.4 is vulnerable to ReDoS (Regular Expression Denial of Service) if parsing an untrusted HTML page with a crafted color.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "tecnickcom/tcpdf"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "6.7.5"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 6.7.4"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-22640"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/tecnickcom/TCPDF/commit/05f3a28f4a7905019469e040cf77e53d6aa7f679"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/tecnickcom/TCPDF"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/zunak/CVE-2024-22640"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2025/06/msg00004.html"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LIB3R2WB7XPW2I4PGVMZ3VLFLRHOK4RB"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LIB3R2WB7XPW2I4PGVMZ3VLFLRHOK4RB"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-19T19:49:13Z",
    "nvd_published_at" : "2024-04-19T16:15:09Z"
  }
}