FPDI: Memory Exhaustion and Endless Loop in FPDI leads to Denial of Service
### 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.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-45802US | — | — | ||
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… | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/Setasign/FPDIPACKAGE
- https://github.com/Setasign/FPDI/commit/1695cfcc7e01fe844a7296b3de90855a3fa65be6WEB
- https://github.com/Setasign/FPDI/releases/tag/v2.6.7WEB
- https://github.com/Setasign/FPDI/security/advisories/GHSA-2mgw-7q6p-8grgWEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-45802ADVISORY
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