7.5

CVE-2026-114605: dnspython dns.name.from_wire_parser() excessive CPU use

Deferred
AliasesDEBIAN-CVE-2026-114605UBUNTU-CVE-2026-114605GHSA-45c3-73f7-pv4m
Published 22-10-2026Last modified 29-10-2026

Vulnerability summary

CVE-2026-114605 is a high (CVSS 7.5) Uncontrolled Recursion vulnerability in rthalley dnspython. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 40.3% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.47%
0%100%
Low · Change unavailable
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 22-10-2026
    PublishedVulnerability first disclosed.
  2. 29-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.47%

Chance of exploitation in the next 30 days

Percentile

40%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

23-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard100 products
  • airflow-2All versions (No fix recorded)
  • airflow-core-2All versions (No fix recorded)
  • authentik-2025.12All versions (No fix recorded)
  • authentik-2026.2All versions (No fix recorded)
  • authentik-2026.5All versions (No fix recorded) | < 2026.5.8-r5
Wolfi7 products
  • datadog-agent-7.78-core-integrationsAll versions (No fix recorded) | < 7.78.4-r29
  • datadog-agent-7.79-core-integrationsAll versions (No fix recorded)
  • datadog-agent-7.80-core-integrationsAll versions (No fix recorded)
  • datadog-agent-7.81-core-integrationsAll versions (No fix recorded) | < 7.81.3-r17
  • py3-cassandra-medusaAll versions (No fix recorded) | < 0.31.1-r0
Debian1 product
  • dnspythonAll versions (No fix recorded)
PyPI1 product
  • dnspython< 2.9.0
Rthalley1 product
Ubuntu1 product
  • dnspythonAll versions (No fix recorded)

6 vendors · 111 products

References

9 links