CVE-2022-22846

dnslib has DNS reply verification issue

7.5 HighFix available

The dnslib package through 0.9.16 for Python does not verify that the ID value in a DNS reply matches an ID value in a query.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

0.87%Unchanged since Feb 8, 2022

What each source reports

CVE List Score used 7.5

The dnslib package through 0.9.16 for Python does not verify that the ID value in a DNS reply matches an ID value in a query.

Record: CVE-2022-22846
CVSS 3.1: 7.5 HighCVSS:3.1/AC:L/AV:N/A:N/C:N/I:H/PR:N/S:U/UI:N
Updated: 2026-11-02

EUVDEUVD-2022-0095 7.5

The dnslib package through 0.9.16 for Python does not verify that the ID value in a DNS reply matches an ID value in a query.

Record: EUVD-2022-0095
CVSS 3.1: 7.5 HighCVSS:3.1/AC:L/AV:N/A:N/C:N/I:H/PR:N/S:U/UI:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-r478-c2pc-m7gx 8.7

dnslib has DNS reply verification issue

The dnslib package through 0.9.16 for Python does not verify that the ID value in a DNS reply matches an ID value in a query.

Record: GHSA-r478-c2pc-m7gx
CVSS 4.0: 8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-345
Updated: 2026-11-02

NVD 7.5

The dnslib package through 0.9.16 for Python does not verify that the ID value in a DNS reply matches an ID value in a query.

Record: CVE-2022-22846
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:P/A:N
Updated: 2026-11-02

OSV 7.5

The dnslib package through 0.9.16 for Python does not verify that the ID value in a DNS reply matches an ID value in a query.

Record: CVE-2022-22846
CVSS 3.1: 7.5 HighCVSS:3.1/AC:L/AV:N/A:N/C:N/I:H/PR:N/S:U/UI:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2022-22846 5.3

The dnslib package through 0.9.16 for Python does not verify that the ID value in a DNS reply matches an ID value in a query.

Record: DEBIAN-CVE-2022-22846
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Updated: 2026-11-03

OSVGHSA-r478-c2pc-m7gx 8.7

dnslib has DNS reply verification issue

The dnslib package through 0.9.16 for Python does not verify that the ID value in a DNS reply matches an ID value in a query.

Record: GHSA-r478-c2pc-m7gx
CVSS 4.0: 8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-345
Updated: 2026-11-02

OSVUBUNTU-CVE-2022-22846 7.5

The dnslib package through 0.9.16 for Python does not verify that the ID value in a DNS reply matches an ID value in a query.

Record: UBUNTU-CVE-2022-22846
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Updated: 2026-11-02

OSVPYSEC-2022-4 No score

The dnslib package through 0.9.16 for Python does not verify that the ID value in a DNS reply matches an ID value in a query.

Record: PYSEC-2022-4
Updated: 2026-11-02

Affected products

dnslib project dnslib

Affected packages

Affected packages
Package	Affected	Fixed
`dnslib` PyPI	before 0.9.17	0.9.17
`python-dnslib` Debian:12	before 0.9.18-1	0.9.18-1
`python-dnslib` Debian:13	before 0.9.18-1	0.9.18-1
`python-dnslib` Debian:14	before 0.9.18-1	0.9.18-1
`dnslib` PyPI	before 0.9.17, plus listed versions 0.10.20.30.3.10.3.2 Show 27 moreShow less 0.3.30.4.00.4.10.4.20.50.60.6.10.6.20.70.80.8.10.8.20.8.30.9.00.9.100.9.120.9.130.9.140.9.160.9.20.9.30.9.40.9.50.9.60.9.70.9.80.9.9	0.9.17
`python-dnslib` Ubuntu:18.04:LTS	All versions, plus listed versions 0.9.7+hg20170303-1	None known
`python-dnslib` Ubuntu:20.04:LTS	All versions, plus listed versions 0.9.10-10.9.12-1	None known
`python-dnslib` Ubuntu:22.04:LTS	All versions, plus listed versions 0.9.14-10.9.16-10.9.18-10.9.19-1	None known
`python-dnslib` Ubuntu:24.04:LTS	All versions, plus listed versions 0.9.23-10.9.24-1	None known
`python-dnslib` Ubuntu:25.10	All versions, plus listed versions 0.9.25-1	None known
`python-dnslib` Ubuntu:26.10	All versions, plus listed versions 0.9.25-1	None known
`python-dnslib` Ubuntu:26.04:LTS	All versions, plus listed versions 0.9.25-1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-22846 is a high vulnerability (CVSS 7.5) in Dnslib Project Dnslib, published January 9, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.87%, the 59th percentile. Fixed in dnslib 0.9.17.

References

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