UBUNTU-CVE-2026-123572

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Source

https://ubuntu.com/security/CVE-2026-123572

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-123572.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-123572

Upstream

CVE-2026-123572

Published

2026-11-09T00:00:00Z

Modified

2026-11-10T02:49:53Z

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
8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

Hickory-dns from 0.20.1 before 0.26.2 contains a denial of service vulnerability in the hickory-proto SVCB and HTTPS record presentation format parser, which panics on malformed alpn values. Attackers can supply untrusted zone files with unbalanced quotes, consecutive commas, or invalid escapes in alpn parameters to crash parsing processes.

References

Affected packages

Ubuntu:26.10 / rust-hickory-dns

Package

Name: rust-hickory-dns
Purl: pkg:deb/ubuntu/rust-hickory-dns?arch=source&distro=stonking

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.24.4-1

0.25.2-3

0.26.1-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "hickory-dns",
            "binary_version": "0.26.1-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-123572.json"

Ubuntu:26.04:LTS / rust-hickory-dns