Medium
Security advisory
A reachable Object::dictLookup assertion in Poppler 0.72.0 allows attackers to cause a denial of service due to the lack of a check for the dict data type, as demonstrated by use of the FileSpec class (in FileSpec.cc) in pdfdetach.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-20650
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:26 UTC · Revision 1
Source evidence
A reachable Object::dictLookup assertion in Poppler 0.72.0 allows attackers to cause a denial of service due to the lack of a check for the dict data type, as demonstrated by use of the FileSpec class (in FileSpec.cc) in pdfdetach.
osv:CVE-2018-20650
Complete source record
{
"id": "3bd25c4d5b7db0c0d18afc55a9ceda8ecd0d6c8a7488b68d4e5f4f4c96f03807",
"url": "https://osv.dev/vulnerability/CVE-2018-20650",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-20650",
"summary": "A reachable Object::dictLookup assertion in Poppler 0.72.0 allows attackers to cause a denial of service due to the lack of a check for the dict data type, as demonstrated by use of the FileSpec class (in FileSpec.cc) in pdfdetach.",
"evidence": "osv:CVE-2018-20650",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2018-20650",
"aliases": [
"CVE-2018-20650"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://gitlab.freedesktop.org/poppler/poppler",
"type": "GIT",
"events": [
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},
{
"last_affected": "9414cc632c17afb7b78c559447b2044268f06cfc"
},
{
"fixed": "de0c0b8324e776f0b851485e0fc9622fc35695b7"
}
],
"database_specific": {
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{
"cpe": "cpe:2.3:a:freedesktop:poppler:0.72.0:*:*:*:*:*:*:*",
"range": [
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"introduced": "0.72.0"
},
{
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"source": "CPE_STRING"
},
{
"range": [
{
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],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"0.72.0",
"poppler-0.72.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-20650.json",
"vanir_signatures": [
{
"id": "CVE-2018-20650-4cf0bf9e",
"digest": {
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"function_hash": "249822804868323713812360103822680906390"
},
"source": "https://gitlab.freedesktop.org/poppler/poppler@de0c0b8324e776f0b851485e0fc9622fc35695b7",
"target": {
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"function": "FileSpec::FileSpec"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2018-20650-9594da17",
"digest": {
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"line_hashes": [
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},
"source": "https://gitlab.freedesktop.org/poppler/poppler@de0c0b8324e776f0b851485e0fc9622fc35695b7",
"target": {
"file": "poppler/FileSpec.cc"
},
"deprecated": false,
"signature_type": "Line",
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}
],
"vanir_signatures_modified": "2026-10-20T13:31:44Z"
}
}
],
"modified": "2026-10-20T13:31:44.396571169Z",
"provider": "osv",
"references": [
"https://access.redhat.com/errata/RHSA-2019:2022",
"https://access.redhat.com/errata/RHSA-2019:2713",
"https://lists.debian.org/debian-lts-announce/2019/09/msg00033.html",
"https://lists.debian.org/debian-lts-announce/2020/11/msg00014.html",
"https://lists.debian.org/debian-lts-announce/2022/09/msg00030.html",
"https://usn.ubuntu.com/3865-1/",
"https://gitlab.freedesktop.org/poppler/poppler/commit/de0c0b8324e776f0b851485e0fc9622fc35695b7",
"https://gitlab.freedesktop.org/poppler/poppler/issues/704"
],
"provider_metadata": {
"unresolved_ranges": [
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"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
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"range": [
{
"introduced": "14.04"
},
{
"last_affected": "14.04"
},
{
"introduced": "16.04"
},
{
"last_affected": "16.04"
},
{
"introduced": "18.04"
},
{
"last_affected": "18.04"
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{
"introduced": "18.10"
},
{
"last_affected": "18.10"
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],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
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"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
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},
{
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{
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{
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{
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],
"source": "CPE_STRING"
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]
},
{
"cpes": [
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"vendor_product": "redhat:enterprise_linux",
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{
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],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
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],
"vendor_product": "redhat:enterprise_linux_desktop",
"extracted_events": [
{
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},
{
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],
"source": "CPE_STRING"
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},
{
"cpes": [
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"cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_eus",
"extracted_events": [
{
"range": [
{
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},
{
"last_affected": "8.1"
},
{
"introduced": "8.2"
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{
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},
{
"introduced": "8.4"
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{
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{
"introduced": "8.6"
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{
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},
{
"cpes": [
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],
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{
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],
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},
{
"cpes": [
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"cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server_aus",
"extracted_events": [
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{
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{
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{
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{
"introduced": "8.6"
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{
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},
{
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"cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:*"
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"extracted_events": [
{
"range": [
{
"introduced": "8.2"
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{
"last_affected": "8.2"
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{
"introduced": "8.4"
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{
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{
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{
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},
{
"cpes": [
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],
"vendor_product": "redhat:enterprise_linux_workstation",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
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],
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},
"related_cves": [
{
"value": "CVE-2018-20650",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 387785,
"published_at": "2019-01-01T16:29:00.233+00:00"
}