High
pdfme pdf-lib before 5.5.10 Denial of Service via Decompression Bomb
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-82864
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 12:14 UTC · Revision 1
Source evidence
pdfme pdf-lib before 5.5.10 Denial of Service via Decompression Bomb
core-osv · Original sourcePublished 31 Aug 2026, 08:46 UTC
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.
osv:CVE-2026-82864
Complete source record
{
"id": "fef6351bdce87d05fdd651e1b5c9b2a2459e5e60aa0301f266d7ae77e31b1171",
"url": "https://osv.dev/vulnerability/CVE-2026-82864",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "pdfme pdf-lib before 5.5.10 Denial of Service via Decompression Bomb",
"summary": "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.",
"evidence": "osv:CVE-2026-82864",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-82864",
"aliases": [
"CVE-2026-82864",
"GHSA-vrqm-gvq7-rrwh"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "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"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/pdfme/pdfme",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "f838f252ded53c52b2fcfd072c12f3c6ff68782c"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "5.5.10"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "5.5.10"
}
],
"source": "DESCRIPTION"
}
]
}
}
],
"versions": [
"5.5.8",
"5.5.7",
"5.5.6",
"5.5.5",
"5.5.4",
"5.5.3",
"5.5.2",
"5.5.1",
"5.5.0",
"5.4.8",
"5.4.7",
"5.4.6",
"5.4.4",
"5.4.3",
"5.4.2",
"5.4.1",
"5.4.0",
"5.3.19",
"5.3.18",
"5.3.17",
"5.3.16",
"5.3.15",
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"5.3.12",
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"5.3.9",
"5.3.8",
"5.3.7",
"5.3.6",
"5.3.5",
"5.3.4",
"5.3.3",
"5.3.2",
"5.3.1",
"5.3.0-beta.0",
"5.3.0",
"5.2.16",
"5.2.15",
"5.2.14",
"5.2.13",
"5.2.12",
"5.2.11",
"5.2.10",
"5.2.9",
"5.2.8",
"5.2.7",
"5.2.5",
"5.2.4",
"5.2.3",
"5.2.2",
"5.2.1",
"5.2.0",
"5.1.7",
"5.1.6",
"5.1.5",
"5.1.4",
"5.1.3",
"5.1.2",
"5.1.1",
"5.1.0",
"5.0.0",
"4.5.2",
"4.5.1",
"4.5.0",
"4.4.2",
"4.4.1",
"4.4.0",
"4.3.2",
"4.3.1",
"4.3.0",
"4.2.5",
"4.2.4",
"4.2.3",
"4.2.2",
"4.2.1",
"4.2.0",
"4.1.1",
"4.1.0",
"4.0.2",
"4.0.0",
"3.4.3",
"3.4.2",
"3.4.1",
"3.4.0",
"3.3.0",
"3.2.3",
"3.2.2",
"3.2.1",
"3.2.0",
"3.1.5",
"3.1.3",
"3.1.2",
"3.1.1",
"3.1.0",
"3.0.1",
"3.0.0-beta.2",
"2.2.1",
"2.2.0",
"2.0.2",
"2.0.1",
"2.0.0",
"1.2.6",
"1.2.4",
"1.2.3",
"1.2.2",
"1.2.1",
"1.2.0",
"1.1.9",
"1.1.7",
"1.1.5",
"1.1.4",
"1.1.3",
"1.1.2",
"1.1.1",
"1.0.18",
"1.0.17",
"1.0.16",
"1.0.15",
"1.0.14",
"1.0.13",
"1.0.12",
"1.0.11",
"1.0.10",
"1.0.9",
"1.0.8",
"1.0.7",
"1.0.6",
"1.0.5",
"1.0.4",
"1.0.3",
"1.0.2",
"1.0.1",
"1.0.0",
"1.0.0-beta.11",
"1.0.0-beta.10",
"1.0.0-beta.9",
"1.0.0-beta.8",
"1.0.0-beta.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-82864.json"
}
}
],
"modified": "2026-10-28T02:30:28.366909610Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82864.json",
"https://github.com/pdfme/pdfme/security/advisories/GHSA-vrqm-gvq7-rrwh",
"https://nvd.nist.gov/vuln/detail/CVE-2026-82864",
"https://www.vulncheck.com/advisories/pdfme-pdf-lib-before-5.5.10-denial-of-service-via-decompression-bomb"
],
"provider_metadata": {
"cwe_ids": [
"CWE-409"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82864.json"
}
},
"related_cves": [
{
"value": "CVE-2026-82864",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 495308,
"published_at": "2026-08-31T08:46:35.269+00:00"
}