FPDI: Memory Exhaustion and Endless Loop in FPDI leads to Denial of Service
Priority LOW 26CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-400.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00259 17th percentileScored 2026-11-07
Fix Fixed FPDI (Setasign): 2.6.7setasign/fpdi (Packagist): 2.6.7
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Setasign | FPDI | before 2.6.7 | 2.6.7 | Patch available | CNA |
| — | setasign/fpdi (Packagist) | before 2.6.7 | 2.6.7 | Patch available | GHSA-2mgw-7q6p-8grg |
- FPDI VendorSetasign Affected before 2.6.7 Fixed in 2.6.7 Patch available CNA
- setasign/fpdi (Packagist) Vendor— Affected before 2.6.7 Fixed in 2.6.7 Patch available GHSA-2mgw-7q6p-8grg
Remediation
- Fix · CNA FPDI (Setasign) Fixed in 2.6.7
- Fix · GHSA-2mgw-7q6p-8grg setasign/fpdi (Packagist) Fixed in 2.6.7 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-45802
- 2026-10-03 Alias added: GHSA-2mgw-7q6p-8grg
References
More Setasign vulnerabilities
- TI-2025-34603 FPDI is Vulnerable to Memory Exhaustion (OOM) through its PDF Parser CVSS 4.0MEDIUM 6.0
Sources
- CVE-2026-45802 · CVE Program
- CVE-2026-45802 · NVD
- FIRST EPSS
- GHSA-2mgw-7q6p-8grg · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences