CVE-2026-5946

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Source
https://cve.org/CVERecord?id=CVE-2026-5946
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5946.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-5946
Downstream
Related
Published
2026-05-20T13:16:40.157Z
Modified
2026-07-08T08:13:48.446439188Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

Multiple flaws have been identified in named related to the handling of DNS messages whose CLASS is not Internet (IN) — for example, CHAOS or HESIOD, or DNS messages that specify meta-classes (ANY or NONE) in the question section. Specially crafted requests reaching the affected code paths — recursion, dynamic updates (UPDATE), zone change notifications (NOTIFY), or processing of IN-specific record types in non-IN data — can cause assertion failures in named. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.

References

Affected packages

Git / github.com/isc-projects/bind9

Affected ranges

Type
GIT
Repo
https://github.com/isc-projects/bind9
Events
Introduced
1477c19dd9a347ee19a42dac227f299a4680506f
Last affected
acf2ba4a9337bced7e666b0460db4f58a4611eb8
Introduced
8db45afa1affcb823e68afdeddedf93e136f5d3e
Fixed
cd4a53b4630ba8646b2071ea8161d578b4185a94
Introduced
14bbdfc7b9db0870a0b8941ca8812d9983fdba1a
Fixed
7d0b4d4d436e7b950225a533e5bc56d8f935cc1c
Introduced
b732da695eecc0526950e2c722cde0bf23e5a070
Fixed
02a7b2c8a549b79cf885d1a0cda28b74de22d197
Database specific 
{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*",
    "extracted_events": [
        {
            "introduced": "9.11.0"
        },
        {
            "last_affected": "9.16.50"
        },
        {
            "introduced": "9.18.0"
        },
        {
            "fixed": "9.18.49"
        },
        {
            "introduced": "9.20.0"
        },
        {
            "fixed": "9.20.23"
        },
        {
            "introduced": "9.21.0"
        },
        {
            "fixed": "9.21.22"
        }
    ]
}

Affected versions

v9.*
v9.18.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5946.json"

Git / gitlab.isc.org/isc-projects/bind9

Affected ranges

Type
GIT
Repo
https://gitlab.isc.org/isc-projects/bind9
Events
Introduced
1477c19dd9a347ee19a42dac227f299a4680506f
Last affected
acf2ba4a9337bced7e666b0460db4f58a4611eb8
Introduced
8db45afa1affcb823e68afdeddedf93e136f5d3e
Fixed
cd4a53b4630ba8646b2071ea8161d578b4185a94
Introduced
14bbdfc7b9db0870a0b8941ca8812d9983fdba1a
Fixed
7d0b4d4d436e7b950225a533e5bc56d8f935cc1c
Introduced
b732da695eecc0526950e2c722cde0bf23e5a070
Fixed
02a7b2c8a549b79cf885d1a0cda28b74de22d197
Database specific 
{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*",
    "extracted_events": [
        {
            "introduced": "9.11.0"
        },
        {
            "last_affected": "9.16.50"
        },
        {
            "introduced": "9.18.0"
        },
        {
            "fixed": "9.18.49"
        },
        {
            "introduced": "9.20.0"
        },
        {
            "fixed": "9.20.23"
        },
        {
            "introduced": "9.21.0"
        },
        {
            "fixed": "9.21.22"
        }
    ]
}

Affected versions

v9.*
v9.18.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5946.json"