Dashboard / CVE-2026-96405

CVE-2026-96405

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 71/100
Published: 2026-10-21 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: None
A: Low

Description

NLnet Labs Unbound up to and including version 1.26.1 limits compression-pointer traversal for each individual domain-name operation but has no aggregate inbound decompression-work budget. Many chained compression pointers in a message results in a lot of CPU usage following them. A malicious actor with recursive-query access and control of an ordinarily delegated authority that serves specially crafted replies can exploit the vulnerability and degrade Unbound's general performance.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
NLnet Labs Unbound 0 < 1.26.2

References & Advisories (1)

Bug Bounty Relevance

71 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

5.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS — Exploitation Probability

0.25%
Raw Score 0.002540
Percentile 16.9%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00254
2026-10-28
0.00254

Intelligence Sources

mitre ref →
nvd ref →

External Links