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
ALPINE (1)
AZL (1)
BELL (1)
CLSA (2)
DEBIAN (1)
ECHO (1)
MGASA (1)
MINI (1)
OESA (4)
openSUSE (2)
RHSA (9)
RLSA (5)
ROOT (1)
SUSE (8)
UBUNTU (1)
Related
ALSA (5)
openSUSE (2)
SUSE (8)
Published
2026-05-20T13:16:40Z
Modified
2026-09-19T08:08:56Z
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
Show details 
{
    "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"
        }
    ],
    "source":  "CPE_RANGE"
}

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
Show details 
{
    "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"
        }
    ],
    "source":  "CPE_RANGE"
}

Affected versions

v9.*
v9.18.0

Database specific

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