GitHub Advisoryadvisory · Packagist

GHSA-2mgw-7q6p-8grg FPDI: Memory Exhaustion and Endless Loop in FPDI leads to Denial of Service

MEDIUM Published 2026-05-19 Modified 2026-06-12 Official page ↗
Aliases
CVE-2026-45802
Ecosystem
Packagist
Packages
setasign/fpdi
Severity
Moderate
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weaknesses
CWE-400, CWE-770
Reviewed
2026-05-19

Affected packages

• Packagist setasign/fpdi: < 2.6.7 → fixed in 2.6.7

Description

Impact This is a significant Denial of Service (DoS) vulnerability. Any application that uses FPDI to process user-supplied PDF files is at risk. An attacker can upload a small, malicious PDF file that will cause the server-side script to crash due to memory exhaustion or a script time-out. Repeated attacks can lead to sustained service unavailability. Patches Fixed as of version 2.6.7 Workarounds No. References No.

Related

Alias · CVE (1)

  • CVE-2026-45802 FPDI is a collection of PHP classes that facilitate reading pages from existing PDF documents and using them as templates in FPDF. vulnerability

Weakness · CWE (2)

  • CWE-400 Uncontrolled Resource Consumption weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling weakness

References