CVE-2024-56527: An issue was discovered in TCPDF before 6.8.0

Q: How do I fix CVE-2024-56527?

tcpdf: upgrade to 6.8.0. Exact commands for each OS are on this page.

Q: Is CVE-2024-56527 being exploited?

CVE-2024-56527 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-56527 affect?

CVE-2024-56527 affects tcpdf. Severity is high (CVSS 7.5). An issue was discovered in TCPDF before 6.8.0. The Error function lacks an htmlspecialchars call for the error message.

Q: How urgent is CVE-2024-56527?

Priority 50/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2024-56527 is a high-severity flaw (CVSS 7.5) affecting tcpdf. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in TCPDF before 6.8.0. The Error function lacks an htmlspecialchars call for the error message.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 45%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-12-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: tcpdf project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-12-27 06:15 UTCPublished CVE record published
2026-06-17 08:12 UTCUpdated Record last modified

tcpdf project tcpdf UPGRADE

Affected: < 6.8.0

Fixed in: 6.8.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy tcpdf || rpm -q tcpdf || tcpdf --version

2. UPGRADE to 6.8.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade tcpdf

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tcpdf

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-56527?

tcpdf: upgrade to 6.8.0. Exact commands for each OS are on this page.

Is CVE-2024-56527 being exploited?

CVE-2024-56527 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-56527 affect?

CVE-2024-56527 affects tcpdf. Severity is high (CVSS 7.5). An issue was discovered in TCPDF before 6.8.0. The Error function lacks an htmlspecialchars call for the error message.

How urgent is CVE-2024-56527?

Priority 50/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-56522 HIGH 7.5 UPGRADE An issue was discovered in TCPDF before 6.8.0
CVE-2024-56521 CRITICAL 9.8 UPGRADE An issue was discovered in TCPDF before 6.8.0
CVE-2024-56519 HIGH 7.5 UPGRADE An issue was discovered in TCPDF before 6.8.0
CVE-2024-51058 MEDIUM 6.2 DOWNGRADE Local File Inclusion (LFI) vulnerability has been discovered in TCPDF 6.7.5

References

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