🛡️ CVE-2026-42005 on Debian — dnsdist

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.

Distribution advisory

This page covers CVE-2026-42005 as tracked by Debian, for the package dnsdist. The fix is available in version 2.1.0-1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability low.

Affected software and timeline

Affected software: dnsdist (fixed in 2.1.0-1), pdns (fixed in 5.1.2-1) and pdns-recursor (fixed in 5.4.3-1). Published on 25 June 2026 and last revised on 4 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security-tracker.debian.org (Advisory)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-06-25
Updated 2026-08-12
Modified 2026-08-04
Fix URL N/A

Affected Packages

Software From version Fixed in
dnsdist — 2.1.0-1
pdns — 5.1.2-1
pdns-recursor — 5.4.3-1

Similar Threats

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More DEBIAN CVE 2026 advisories

Part of DEBIAN CVE 2026 in the advisory index.