Is CVE-2026-82864 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-82864?

CVE-2026-82864 has a CVSS v3 severity of MEDIUM (6.5).

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CVE-2026-82864

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.