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CVE-2024-56520

tecnickcom/tc-lib-pdf-font mishandles fonts

7.3 HighFix available

An issue was discovered in tc-lib-pdf-font before 2.6.4, as used in TCPDF before 6.8.0 and other products. Fonts are mishandled, e.g., FontBBox for Type 1 and TrueType fonts is misparsed.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
Low

Exploit likelihood

0.56%Up 0.5 points since Dec 27, 2024
90%50%10%1%

What each source reports

CVE List Score used 7.3

An issue was discovered in tc-lib-pdf-font before 2.6.4, as used in TCPDF before 6.8.0 and other products. Fonts are mishandled, e.g., FontBBox for Type 1 and TrueType fonts is misparsed.

Record
CVE-2024-56520
CVSS 3.1
7.3 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Updated
2026-11-02
EUVDEUVD-2024-3587 7.3

An issue was discovered in tc-lib-pdf-font before 2.6.4, as used in TCPDF before 6.8.0 and other products. Fonts are mishandled, e.g., FontBBox for Type 1 and TrueType fonts is misparsed.

Record
EUVD-2024-3587
CVSS 3.1
7.3 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Updated
2026-11-02
GitHub AdvisoriesGHSA-grhh-r4jj-8jh7 No score

tecnickcom/tc-lib-pdf-font mishandles fonts

An issue was discovered in tc-lib-pdf-font before 2.6.4, as used in TCPDF before 6.8.0 and other products. Fonts are mishandled, e.g., FontBBox for Type 1 and TrueType fonts is misparsed.

Record
GHSA-grhh-r4jj-8jh7
Updated
2026-11-02
NVD 7.3

An issue was discovered in tc-lib-pdf-font before 2.6.4, as used in TCPDF before 6.8.0 and other products. Fonts are mishandled, e.g., FontBBox for Type 1 and TrueType fonts is misparsed.

Record
CVE-2024-56520
CVSS 3.1
7.3 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Updated
2026-11-02
OSV 7.3

An issue was discovered in tc-lib-pdf-font before 2.6.4, as used in TCPDF before 6.8.0 and other products. Fonts are mishandled, e.g., FontBBox for Type 1 and TrueType fonts is misparsed.

Record
CVE-2024-56520
CVSS 3.1
7.3 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Updated
2026-11-02
OSVDEBIAN-CVE-2024-56520 7.3

An issue was discovered in tc-lib-pdf-font before 2.6.4, as used in TCPDF before 6.8.0 and other products. Fonts are mishandled, e.g., FontBBox for Type 1 and TrueType fonts is misparsed.

Record
DEBIAN-CVE-2024-56520
CVSS 3.1
7.3 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Updated
2026-11-02
OSVUBUNTU-CVE-2024-56520 7.3

An issue was discovered in tc-lib-pdf-font before 2.6.4, as used in TCPDF before 6.8.0 and other products. Fonts are mishandled, e.g., FontBBox for Type 1 and TrueType fonts is misparsed.

Record
UBUNTU-CVE-2024-56520
CVSS 3.1
7.3 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Updated
2026-11-02
OSVGHSA-grhh-r4jj-8jh7 No score

tecnickcom/tc-lib-pdf-font mishandles fonts

An issue was discovered in tc-lib-pdf-font before 2.6.4, as used in TCPDF before 6.8.0 and other products. Fonts are mishandled, e.g., FontBBox for Type 1 and TrueType fonts is misparsed.

Record
GHSA-grhh-r4jj-8jh7
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
tecnickcom/tc-lib-pdf-font
Packagist
 before 2.6.4
2.6.4
tcpdf
Debian:12
 before 6.6.2+dfsg1-1+deb12u1, plus listed versions
6.6.2+dfsg1-1
6.6.2+dfsg1-1+deb12u1
tcpdf
Debian:13
 before 6.8.0+dfsg-1
6.8.0+dfsg-1
tcpdf
Debian:14
 before 6.8.0+dfsg-1
6.8.0+dfsg-1
tcpdf
Debian:11
From an advisory covering 8 CVEs
 before 6.3.5+dfsg1-1+deb11u1, plus listed versions
6.3.5+dfsg1-1
6.3.5+dfsg1-1+deb11u1
tcpdf
Debian:12
From an advisory covering 8 CVEs
 before 6.6.2+dfsg1-1+deb12u1, plus listed versions
6.6.2+dfsg1-1
6.6.2+dfsg1-1+deb12u1
tecnickcom/tc-lib-pdf-font
Packagist
 before 2.6.4, plus listed versions
1.0.11.0.31.10.01.10.31.10.5
Show 45 moreShow less
1.10.61.11.01.11.11.11.101.11.21.11.31.11.41.11.51.11.61.11.71.11.81.11.91.12.01.13.01.14.01.15.01.15.11.15.101.15.31.15.41.15.51.15.61.15.71.15.91.16.11.2.01.2.11.3.01.3.11.3.21.4.01.4.11.4.21.4.31.5.01.6.01.7.01.7.21.7.31.7.41.7.51.7.61.8.01.8.21.8.3
2.6.4
tcpdf
Ubuntu:14.04:LTS
 All versions, plus listed versions
6.0.010+dfsg-16.0.021+dfsg-16.0.048+dfsg-16.0.048+dfsg-2
 None known
tcpdf
Ubuntu:16.04:LTS
 All versions, plus listed versions
6.0.093+dfsg-16.0.093+dfsg-1ubuntu1
 None known
tcpdf
Ubuntu:18.04:LTS
 All versions, plus listed versions
6.2.12+dfsg2-1ubuntu16.2.13+dfsg-16.2.13+dfsg-1ubuntu1
 None known
tcpdf
Ubuntu:20.04:LTS
 All versions, plus listed versions
6.2.13+dfsg-1ubuntu16.3.2+dfsg1-16.3.4+dfsg1-16.3.5+dfsg1-1
 None known
tcpdf
Ubuntu:22.04:LTS
 All versions, plus listed versions
6.3.5+dfsg1-16.4.2+dfsg1-16.4.4+dfsg1-1
 None known
tcpdf
Ubuntu:24.04:LTS
 All versions, plus listed versions
6.6.2+dfsg1-16.6.5+dfsg-16.7.4+dfsg-16.7.5+dfsg-1
 None known

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-56520 is a high vulnerability (CVSS 7.3) in Tecnick Tcpdf, published December 27, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.56%, the 46th percentile. Fixed in tecnickcom/tc-lib-pdf-font 2.6.4.

References

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Left out here: 27 versions. The JSON record has them.

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