CVE-2026-82864
pdfme pdf-lib before 5.5.10 Denial of Service via Decompression Bomb
- State
- Published
- Severity
- 7.1 High
- Published
- Aug 31, 2026
- Updated
- Oct 8, 2026
- Reserved
- 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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | 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 | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)
Affected Products
| Product | Versions |
|---|---|
pdf-libpdfme |
|
References
- GitHub Security Advisory (GHSA-vrqm-gvq7-rrwh)vendor-advisory
- VulnCheck Advisory: pdfme pdf-lib before 5.5.10 Denial of Service via Decompression Bombthird-party-advisory
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