# CVE-2026-82864

## Summary

- **CVE ID:** CVE-2026-82864
- **Severity:** HIGH
- **CVSS Score:** 7.1 (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)
- **CWE:** CWE-409
- **Published:** Aug 31, 2026
- **Last Modified:** Aug 31, 2026

## 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.

## Affected Products

- pdfme — pdf-lib (0)
- pdfme — pdf-lib (5.5.10)

## References

- [CNA](https://github.com/pdfme/pdfme/security/advisories/GHSA-vrqm-gvq7-rrwh)
- [CNA](https://www.vulncheck.com/advisories/pdfme-pdf-lib-before-5.5.10-denial-of-service-via-decompression-bomb)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.25%
- **EPSS Percentile:** 16.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._