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vuln-cve/data/2026/64xxx/CVE-2026-64193.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-64193",
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"state": "PUBLISHED",
"assignerShortName": "CPANSec",
"dateReserved": "2026-07-19T10:13:00.756Z",
"datePublished": "2026-07-20T17:54:42.087Z",
"dateUpdated": "2026-07-21T18:55:09.291Z"
},
"containers": {
"cna": {
"affected": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"packageName": "Net-DNS",
"product": "Net::DNS",
"programFiles": [
"lib/Net/DNS/RR/OPT.pm"
],
"programRoutines": [
{
"name": "Net::DNS::RR::OPT::EXTENDED_ERROR::_decompose"
}
],
"repo": "https://www.net-dns.org/svn/net-dns/",
"vendor": "NLNETLABS",
"versions": [
{
"lessThanOrEqual": "1.55",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Steffen Ullrich"
}
],
"descriptions": [
{
"lang": "en",
"value": "Net::DNS versions through 1.55 for Perl allow remote execution injection via EDNS EXTENDED ERROR.\n\nNet::DNS::RR::OPT::EXTENDED_ERROR::_decompose parses the EXTRA-TEXT field of an EDNS EXTENDED-ERROR option (RFC 8914) by tokenising the raw bytes and passing the result to Perl's eval. There is some escaping done for $ and @, but not for backticks. This can be exploited for command execution if $pkt->edns->option('EXTENDED-ERROR') is called in array context, for example with a payload of {0:`\"<command>\"`} in EXTRA-TEXT."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-95",
"description": "CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"shortName": "CPANSec",
"dateUpdated": "2026-07-20T17:54:42.087Z"
},
"references": [
{
"url": "https://www.net-dns.org/blog/#release-candidate-for-netdns-1.56"
},
{
"tags": [
"issue-tracking"
],
"url": "https://rt.cpan.org/Ticket/Display.html?id=179945"
},
{
"tags": [
"release-notes"
],
"url": "https://metacpan.org/release/NLNETLABS/Net-DNS-1.55_01/changes"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to version 1.56 or later."
}
],
"source": {
"discovery": "UNKNOWN"
},
"timeline": [
{
"lang": "en",
"time": "2026-07-10T00:00:00.000Z",
"value": "Issue reported publicly via RT."
},
{
"lang": "en",
"time": "2026-07-10T00:00:00.000Z",
"value": "Version 1.55_01 (release candidate for version 1.56) published on CPAN."
},
{
"lang": "en",
"time": "2026-07-18T00:00:00.000Z",
"value": "Version 1.56 published on CPAN."
}
],
"title": "Net::DNS versions through 1.55 for Perl allow remote execution injection via EDNS EXTENDED ERROR",
"x_generator": {
"engine": "cpansec-cna-tool 0.1"
}
},
"adp": [
{
"title": "CVE Program Container",
"references": [
{
"url": "http://www.openwall.com/lists/oss-security/2026/07/20/12"
}
],
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2026-07-20T20:30:04.101Z"
}
},
{
"metrics": [
{
"cvssV3_1": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 9.8,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
}
},
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-07-21T18:54:48.456598Z",
"id": "CVE-2026-64193",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-07-21T18:55:09.291Z"
}
}
]
}
}