CVE-2026-82864

pdfme pdf-lib before 5.5.10 Denial of Service via Decompression Bomb

Published Aug 31, 2026 CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Pdfme
Pdfme pdf-lib
Vendors & Products Pdfme
Pdfme pdf-lib
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title pdfme pdf-lib before 5.5.10 Denial of Service via Decompression Bomb
First Time appeared Pdflib
Pdflib pdflib
Weaknesses CWE-409
CPEs cpe:2.3:a:pdflib:pdflib:*:*:*:*:*:*:*:*
Vendors & Products Pdflib
Pdflib pdflib
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 7.1, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 8, 2026, 3:25 PM
Reserved
Aug 31, 2026, 8:37 AM
Status
Deferred
Published
Aug 31, 2026, 9:17 AM
Modified
Oct 8, 2026, 4:17 PM