CVE-2026-82864
pdfme pdf-lib versions before 5.5.10 contain an unbounded buffer growth vulnerability in the DecodeStream.ensureBuffer() method that allows attackers to cause denial of service by supplying a crafted PDF with a FlateDecode stream containing a decompression bomb. Attackers can upload a small compressed PDF that decompresses to hundreds of megabytes, exhausting memory and crashing the Node.js process or freezing browser tabs during PDF parsing.
Published:Aug 31, 2026
Last Modified:Aug 31, 2026
EPS:Aug 31, 2026
EPSS Score:0.00249
CVSS Score:6.5
Affected Products
Vendor
Product
Action
Vendor
Pdflib
Product
Pdflib
Pdflib
Pdflib
Vendor
Pdfme
Product
Pdf-lib
Pdfme
Pdf-lib
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
No CAPEC recorded yet
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
