How severe is CVE-2022-22846?

CVE-2022-22846 has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2022-22846?

CVE-2022-22846 affects the following packages: dnslib (PyPI). Ecosystems affected: PyPI.

How do I fix CVE-2022-22846?

Update dnslib to 0.9.17 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-22846 is resolved across your whole dependency graph.

How do I detect CVE-2022-22846 in my PyPI dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for dnslib, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2022-22846 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2022-22846 actively exploited in the wild?

No public exploit code has been indexed for CVE-2022-22846 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2022-22846?

CVE-2022-22846 has an EPSS (Exploit Prediction Scoring System) score of 0.8%, placing it in the 57th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

When was CVE-2022-22846 published, and has it been updated?

CVE-2022-22846 was published on January 9, 2022 and was last updated on August 12, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐍

🐍 PyPI

Not in CISA KEV

HIGH severity

CVE-2022-22846 — dnslib

HIGHFix: paulc/dnslib@76e8677

CVE-2022-22846 is a high-severity (CVSS 7.5) vulnerability in dnslib. A fix is available for dnslib — see the affected versions and patch details below.

dnslib has DNS reply verification issue

Also known asGHSA-r478-c2pc-m7gxPYSEC-2022-4

Published

Jan 9, 2022

Updated

Aug 12, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Oct 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

0.8%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs57th percentile — riskier than 57% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2022-22846 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,987 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected

🐍dnslib

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

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.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐍PyPI	`dnslib`	all versions	0.9.17`pip install --upgrade 'dnslib==0.9.17'`

Affected Products

1 product · 1 configurations

Application

dnslibdnslib_project

≤ 0.9.16

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for dnslib, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update dnslib to 0.9.17 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-22846 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

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.

O3 Security · Impact-Aware SCA

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