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EPSS 0.2%top 84%

CVE-2026-82864: Improper Handling of Highly Compressed Data (Data Amplification) in pdfme pdf-lib

0
High
VulnerabilityCVE-2026-82864cvecve-2026-82864gcveosvghsa-gvgq-37w5-4f8qghsa
Published: 08/31/2026 (08/31/2026, 08:46:35 UTC)
Source: CVE Database V5
Vendor/Project: pdfme
Product: pdf-lib

Description

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.

CVSS v4.0

Score 7.1high

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
None
Vuln. Integrity
None
Vuln. Availability
High
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Technical Details

Data Version
5.2
Assigner Short Name
VulnCheck
Date Reserved
2026-08-31T08:37:53.169Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a954466acd9273b49d7ddca

Added to database: 08/31/2026, 09:07:50 UTC

Last updated: 09/01/2026, 03:05:26 UTC

Views: 15

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