FPDI: Memory Exhaustion and Endless Loop in FPDI leads to Denial of Service
CVE-2026-45802

6MEDIUM

Key Information:

Vendor

Setasign

Status
Fpdi
Vendor
CVE Published:
11 June 2026

What is 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. Prior to version 2.6.7, 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. This issue has been patched in version 2.6.7.

Affected Version(s)

FPDI < 2.6.7

References

https://github.com/Setasign/FPDI/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/Setasign/FPDI/commit/1695cfcc7e01fe844...
x_refsource_MISC
https://github.com/Setasign/FPDI/releases/tag/v2.6.7
x_refsource_MISC

CVSS V4

Score:
6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.