CVE-2026-45802
FPDI: Memory Exhaustion and Endless Loop in FPDI leads to Denial of Service
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
FPDI: Memory Exhaustion and Endless Loop in FPDI leads to Denial of Service
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.
- Record
CVE-2026-45802- CVSS 4.0
- 6.0 Medium
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 - Weakness
- CWE-770, CWE-400
- Updated
- 2026-11-02
EUVDEUVD-2026-36305
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.
- Record
EUVD-2026-36305- CVSS 4.0
- 6.0 Medium
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-2mgw-7q6p-8grg
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.
- Record
GHSA-2mgw-7q6p-8grg- CVSS 4.0
- 6.0 Medium
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 - Weakness
- CWE-400, CWE-770
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-45802- CVSS 4.0
- 6.0 Medium
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-400, CWE-770
- Updated
- 2026-11-02
OSV
FPDI: Memory Exhaustion and Endless Loop in FPDI leads to Denial of Service
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.
- Record
CVE-2026-45802- CVSS 4.0
- 6.0 Medium
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 - Weakness
- CWE-400, CWE-770
- Updated
- 2026-11-02
OSVGHSA-2mgw-7q6p-8grg
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.
- Record
GHSA-2mgw-7q6p-8grg- CVSS 4.0
- 6.0 Medium
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 - Weakness
- CWE-400, CWE-770
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
setasign/fpdiPackagist |
before 2.6.7 | 2.6.7 |
setasign/fpdiPackagist |
before 2.6.7, plus listed versions 1.5.21.5.31.5.41.6.01.6.1 Show 29 moreShow less1.6.2v2.0.0v2.0.0-betav2.0.0-beta2v2.0.0-rc1v2.0.1v2.0.2v2.0.3v2.1.0v2.1.1v2.2.0v2.3.0v2.3.1v2.3.2v2.3.3v2.3.4v2.3.5v2.3.6v2.3.7v2.4.0v2.4.1v2.5.0v2.6.0v2.6.1v2.6.2v2.6.3v2.6.4v2.6.5v2.6.6 |
2.6.7 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-45802 is a medium vulnerability (CVSS 6.0) in Setasign Fpdi, published May 19, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 17th percentile. Fixed in setasign/fpdi 2.6.7.
References
github.com/Setasign/FPDI/security/advisories/GHSA-2mgw-7q6p-8grg
nvd.nist.gov/vuln/detail/CVE-2026-45802