Medium
Security advisory
Memory leak in Kafka protocol dissector in Wireshark 3.4.0 and 3.2.0 to 3.2.8 allows denial of service via packet injection or crafted capture file.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-26418
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:53 UTC · Revision 1
Source evidence
Memory leak in Kafka protocol dissector in Wireshark 3.4.0 and 3.2.0 to 3.2.8 allows denial of service via packet injection or crafted capture file.
osv:CVE-2020-26418
Complete source record
{
"id": "6755cef7d98ecc9b2da7890d18e63cdaab09f1e115fe5e37c1454d2d5357568b",
"url": "https://osv.dev/vulnerability/CVE-2020-26418",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-26418",
"summary": "Memory leak in Kafka protocol dissector in Wireshark 3.4.0 and 3.2.0 to 3.2.8 allows denial of service via packet injection or crafted capture file.",
"evidence": "osv:CVE-2020-26418",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-26418",
"aliases": [
"CVE-2020-26418"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/wireshark/wireshark",
"type": "GIT",
"events": [
{
"introduced": "e0ed4cfa3d72110257da54c26ad3a28d282ef454"
},
{
"last_affected": "8c208b7f257de50613e1e6a09a5b221f284883a0"
},
{
"introduced": "9733f173ea5e6255e8da208ef183210aa264d948"
},
{
"last_affected": "9733f173ea5e6255e8da208ef183210aa264d948"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2.0"
},
{
"last_affected": "3.2.8"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:wireshark:wireshark:3.4.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.4.0"
},
{
"last_affected": "3.4.0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"3.4.0",
"wireshark-3.2.8",
"v3.2.8",
"wireshark-3.4.0",
"v3.4.0",
"v3.2.8rc0",
"wireshark-3.2.7",
"v3.2.7",
"v3.2.7rc0",
"wireshark-3.2.6",
"v3.2.6",
"v3.2.6rc0",
"wireshark-3.2.5",
"v3.2.5",
"v3.2.5rc0",
"wireshark-3.2.4",
"v3.2.4",
"v3.2.4rc0",
"wireshark-3.2.3",
"v3.2.3",
"v3.2.3rc0",
"wireshark-3.2.2",
"v3.2.2",
"v3.2.2rc0",
"wireshark-3.2.1",
"v3.2.1",
"v3.2.1rc0",
"wireshark-3.2.0",
"v3.2.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26418.json"
}
},
{
"ranges": [
{
"repo": "https://gitlab.com/wireshark/wireshark",
"type": "GIT",
"events": [
{
"introduced": "e0ed4cfa3d72110257da54c26ad3a28d282ef454"
},
{
"last_affected": "8c208b7f257de50613e1e6a09a5b221f284883a0"
},
{
"introduced": "9733f173ea5e6255e8da208ef183210aa264d948"
},
{
"last_affected": "9733f173ea5e6255e8da208ef183210aa264d948"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2.0"
},
{
"last_affected": "3.2.8"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:wireshark:wireshark:3.4.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.4.0"
},
{
"last_affected": "3.4.0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"3.4.0",
"wireshark-3.2.8",
"v3.2.8",
"wireshark-3.4.0",
"v3.4.0",
"v3.2.8rc0",
"wireshark-3.2.7",
"v3.2.7",
"v3.2.7rc0",
"wireshark-3.2.6",
"v3.2.6",
"v3.2.6rc0",
"wireshark-3.2.5",
"v3.2.5",
"v3.2.5rc0",
"wireshark-3.2.4",
"v3.2.4",
"v3.2.4rc0",
"wireshark-3.2.3",
"v3.2.3",
"v3.2.3rc0",
"wireshark-3.2.2",
"v3.2.2",
"v3.2.2rc0",
"wireshark-3.2.1",
"v3.2.1",
"v3.2.1rc0",
"wireshark-3.2.0",
"v3.2.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26418.json"
}
}
],
"modified": "2026-10-24T10:50:38.763602794Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M75HYXU36SP6GHIDPHNZGJKEO6TX4C4Y/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YHWDZPWQJMLK64VFDWJC5SEGPNH6Y72Z/",
"https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26418.json",
"https://lists.debian.org/debian-lts-announce/2021/02/msg00008.html",
"https://security.gentoo.org/glsa/202101-12",
"https://www.wireshark.org/security/wnpa-sec-2020-16.html",
"https://gitlab.com/wireshark/wireshark/-/issues/16739",
"https://www.oracle.com/security-alerts/cpuApr2021.html"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "32"
},
{
"last_affected": "32"
},
{
"introduced": "33"
},
{
"last_affected": "33"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*"
],
"vendor_product": "oracle:zfs_storage_appliance_kit",
"extracted_events": [
{
"range": [
{
"introduced": "8.8"
},
{
"last_affected": "8.8"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2020-26418",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 442383,
"published_at": "2020-12-11T19:15:12.09+00:00"
}