pdfme pdf-lib before 5.5.10 Denial of Service via Decompression Bomb (CVE-2026-82864) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-82864

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

Answer in brief

CVE-2026-82864 records a Unknown severity vulnerability in pdfme pdf-lib before 5.5.10 Denial of Service via Decompression Bomb. The current sources do not mark it as known exploited. The current feed maps pdfme/pdf-lib (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 31, 2026Updated Aug 31, 2026Source checked Aug 31, 2026First seen by HOL Aug 31, 2026Material review Aug 31, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps pdfme/pdf-lib (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
pdfme/pdf-libgeneric	>=0 <5.5.10	5.5.10

Recommended response

Check inventory. Check lockfiles and deployed manifests for pdfme/pdf-lib.
Review the reported fix. Update pdfme/pdf-lib to 5.5.10 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 31, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 31, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 31, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.