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

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MEDIUM

FPDI: Memory Exhaustion and Endless Loop in FPDI leads to Denial of Service

Published Jun 11, 2026

6.0

MEDIUM

CVSS 4.0

EPSS 0.45%

Description

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 products

Vendor Setasign Product FPDI Default
n/a
- Version
  < 2.6.7
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Setasign

FPDI

n/a

Version	Status	Constraints
< 2.6.7	affected	-

Remediation

No remediation recorded yet.

Weaknesses (2)

CWE-400

Uncontrolled Resource Consumption

CWE-770

Allocation of Resources Without Limits

References (5)

https://github.com/Setasign/FPDI/commit/1695cfcc7e01fe844a7296b3de90855a3fa65be6
x_refsource_MISC
https://github.com/Setasign/FPDI/releases/tag/v2.6.7
x_refsource_MISC
https://github.com/Setasign/FPDI/security/advisories/GHSA-2mgw-7q6p-8grg
x_refsource_CONFIRM
https://github.com/advisories/GHSA-2mgw-7q6p-8grg
Advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-45802

Link	Providers	Tags
https://github.com/Setasign/FPDI/commit/1695cfcc7e01fe844a7296b3de90855a3fa65be6		x_refsource_MISC
https://github.com/Setasign/FPDI/releases/tag/v2.6.7		x_refsource_MISC
https://github.com/Setasign/FPDI/security/advisories/GHSA-2mgw-7q6p-8grg		x_refsource_CONFIRM
https://github.com/advisories/GHSA-2mgw-7q6p-8grg		Advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-45802