CVE-2026-114605

HIGH

7.5

CVSS v3

Description

dnspython is a DNS toolkit for Python. Prior to 2.9.0, dns.name.from_wire_parser follows attacker-controlled DNS compression pointer chains without a hop limit. A malicious DNS wire-format message can force excessive pointer traversal during name decompression, causing high CPU use, application degradation, or denial of service in applications that process untrusted DNS messages. This issue is fixed in version 2.9.0.

CWE-674

How to fix

Remediation Available

dnspythonDebian

Fixed in:2.8.0-7CVE-2026-114605

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.34%probability of exploitation in 30 days

27thpercentile

Low risk: more likely to be exploited than 27% of all known CVEs.

References

Other references3

Related Vulnerabilities

Other CWE-674 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2024-25111	High	8.6	65%	-	Fix
CVE-2023-50269	High	8.6	58%	-	Fix
CVE-2021-42697	High	7.5	36%	-	Fix
CVE-2007-1285	High	7.5	19%	-	Fix
CVE-2018-0739	Medium	6.5	19%	-	Fix

Common questions

How do I fix CVE-2026-114605?

Upgrade dnspython on debian unstable to 2.8.0-7 or later.

Is CVE-2026-114605 being actively exploited?

Not that we know of. CVE-2026-114605 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.34% is the estimated probability that it will be exploited in the next 30 days. That is higher than 27% of all scored CVEs.

How severe is CVE-2026-114605?

CVE-2026-114605 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-114605 affect?

Published advisories record a fix for dnspython (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-29.