VDB
CVE-2026-96405
CVE-2026-96405
PUBLISHED
CVSS 5.3 MEDIUM
Reported by NLnet Labs · Published October 21, 2026
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.
Risk Scores
CVSS 3.1
5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| NLnet Labs | Unbound | 0 |
| alpine | unbound | 0 |
| NLnet Labs | Unbound | 0 |
Timeline
- Oct 21, 2026 EPSS Score
- Oct 21, 2026 CVE Published
- Oct 25, 2026 EPSS Score
- Oct 29, 2026 EPSS Score