{"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": "2026-07-20T20:30:04.101Z"}, "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"}}]}}

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