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No exploitation reportedFix available

CVE-2024-56520

No exploitation reported by the sources we read.

  • Published2024-12-27
  • Fixed in2.6.4

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2024-12-2705:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-04 03:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2024-56520?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2024-56520?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV
tecnickcom/tc-lib-pdf-font
BranchAffectedFixed in
2.6< 2.6.42.6.4

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As mitre, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • tecnick tcpdfother versions: not affected
    Affected
    • < 6.8.0fixed in 6.8.0semver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2024-12-27

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • tcpdfUbuntu:24.04:LTSall versions · no fixed version listed
  • tcpdfUbuntu:22.04:LTSall versions · no fixed version listed
  • tcpdfUbuntu:20.04:LTSall versions · no fixed version listed
  • tcpdfUbuntu:18.04:LTSall versions · no fixed version listed
  • tcpdfUbuntu:16.04:LTSall versions · no fixed version listed
  • tcpdfUbuntu:14.04:LTSall versions · no fixed version listed
  • tcpdfDebian:14all versions · fixed in 6.8.0+dfsg-1
  • tcpdfDebian:13all versions · fixed in 6.8.0+dfsg-1

2 more package ranges on OSV.dev

Full record on NVD

Fix

  1. Update tecnickcom/tc-lib-pdf-font to 2.6.4

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

  • EUVD-2024-3587same flawENISA EUVD · LicenseRef-ENISA-legal-notice
  • GHSA-grhh-r4jj-8jh7same flawGitHub Advisory Database · CC-BY-4.0
  • DLA-4199-1advisory covering several CVEsDebian · LicenseRef-unstated
  • DSA-5933-1advisory covering several CVEsDebian · LicenseRef-unstated

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Published
2024-12-27
Last Modified
2026-06-17
NVD status
Deferred
GitHub Advisory
GHSA-grhh-r4jj-8jh7

Frequently asked questions

What is CVE-2024-56520?

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.

Is CVE-2024-56520 actively exploited?

Active exploitation of CVE-2024-56520 has not been confirmed. Its EPSS score was 0.6% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-56520?

CVE-2024-56520 has a CVSS v3 base score of 7.3 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

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Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

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Sources for this record