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Fencer Vulns
high 7.5

CVE-2024-22640 json

TCPDF vulnerable to Regular Expression Denial of Service

published 2024-04-19 2 y ago modified 2026-06-17 4 mo ago also GHSA-mx3p-fhpw-x6rv , EUVD-2024-1258

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 71%
public exploits
0
none known

Summary

TCPDF version <=6.6.5 is vulnerable to ReDoS (Regular Expression Denial of Service) if parsing an untrusted HTML page with a crafted color.

Patch / fix

  • packagist tecnickcom/tcpdf 6.7.5
  • tcpdf Debian 12 6.6.2+dfsg1-1+deb12u1
  • tcpdf Debian 14, Debian 13 6.7.5+dfsg-1

debian advisories DEBIAN-CVE-2024-22640

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-22640 updated cvss 5.3

tcpdf: ReDos when parsing an untrusted HTML page with a crafted color

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

1.32% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/zunak/CVE-2024-22640 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
packagist tecnickcom/tcpdf
<6.7.5
6.7.5

Affected products

  • tcpdf_project tcpdf

Classification

Weakness
  • CWE-1333 Inefficient Regular Expression Complexity

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.