OESA-2026-3626

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Source

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-3626

Import Source

https://repo.openeuler.org/security/data/osv/OESA-2026-3626.json

JSON Data

https://api.osv.dev/v1/vulns/OESA-2026-3626

Upstream

CVE-2026-64193

Published

2026-09-05T15:03:17Z

Modified

2026-09-05T15:16:24Z

Severity

9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

perl-Net-DNS security update

Details

Net :: DNS is a collection of Perl's Domain Name System resolvers. It allows programmers to perform DNS queries for gethostbyname and gethostbyaddr functions.

Security Fix(es):

Net::DNS versions through 1.55 for Perl allow remote execution injection via EDNS EXTENDED ERROR.

Net::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.(CVE-2026-64193)

Database specific

{
    "severity": "Critical"
}

References

Affected packages

openEuler:24.03-LTS-SP1 / perl-Net-DNS

Package

Name: perl-Net-DNS
Purl: pkg:rpm/openEuler/perl-Net-DNS&distro=openEuler-24.03-LTS-SP1

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1.40-2.oe2403sp1

Ecosystem specific

{
    "noarch": [
        "perl-Net-DNS-1.40-2.oe2403sp1.noarch.rpm",
        "perl-Net-DNS-help-1.40-2.oe2403sp1.noarch.rpm"
    ],
    "src": [
        "perl-Net-DNS-1.40-2.oe2403sp1.src.rpm"
    ]
}

Database specific

source

"https://repo.openeuler.org/security/data/osv/OESA-2026-3626.json"