5.3
Medium
CVE-2026-96405 NLnet Labs Unbound up to and including version 1.26.1 limits compression-pointer traversal for each individual…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| unbound 1.26 | earliest → < 1.26.2 | 1.26.2 |
References
- www.nlnetlabs.nl www.nlnetlabs.nl
Timeline
- Published
- Last modified
Other CVEs of unbound
The 58 CVEs of unbound →
CVE-2026-97206
NLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contains a DNS-over-QUIC (DoQ) lifetime bug reachable…
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CVE-2026-50106
When NLnet Labs Unbound up to and including version 1.26.1 is configured with both a root trust anchor and an additional…
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5.3
Medium