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NLnetLabs
unbound
C2019–2025
NLnetLabs / unbound

unbound

Unbound is a validating, recursive, and caching DNS resolver.

7Distinct people
7Mentions
0Explicit recommenders
5.1KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Unbound is a validating, recursive, and caching DNS resolver.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year7 dated mentions

Observed mentions: 2019-12-11 17:40:37 UTC to 2025-08-20 20:25:24 UTC.

0122019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments20192020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 comments20222023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2025

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC101
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC000
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC000
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC110
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC202
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC101
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC202

What Hacker News says

7 sources
I have idea of even more hostile environment in my mind. My plan for next phase is to get rid of 127.0.0.1 on lo interface. I've tried it once and I had to reboot my machine as all things stopped working. As another angle to make it even more interesting but on network scale I've implemented option for Unbound to suppress A records even if they do exist: https://github.com/NLnetLabs/unbound/pull/819 and push dual stack apps to be IPv6 only.
In Enabling IPv6 support for IPv4 only apps on Linux
Links to commits: https://github.com/NLnetLabs/unbound/commit/09845779d5f2c96e... Shell Injection in IPSECMOD https://github.com/NLnetLabs/unbound/commit/b60c4a472c856f0a... Uninitialized Memory in worker_handle_request() https://github.com/NLnetLabs/unbound/commit/f887552763477a60... Config Injection in create_unbound_ad_servers.sh https://github.com/NLnetLabs/unbound/commit/226298bbd36f1f0f... Integer Overflow in Regional Allocator https://github.com/NLnetLabs/unbound/commit/a3545867fcdec503... Integer Overflow in sldns_str2wire_dname_buf_origin() https://github.com/NLnetLabs/unbound/commit/fa23ee8f31ba9a01... Out of Bounds Write in sldns_bget_token_par() https://github.com/NLnetLabs/unbound/commit/f5e06689d193619c... Assert Causing DoS in synth_cname() https://github.com/NLnetLabs/unbound/commit/d2eb78e871153f22... Assert Causing DoS i
Read the rest
n dname_pkt_copy() https://github.com/NLnetLabs/unbound/commit/02080f6b180232f4... Integer Overflows in Size Calculations https://github.com/NLnetLabs/unbound/commit/2d444a5037acff60... Insufficient Handling of Compressed Names in dname_pkt_copy() https://github.com/NLnetLabs/unbound/commit/6c3a0b54ed8ace93... Out of Bound Write Compressed Names in rdata_copy()
In Ostif.org Unbound DNS Audit Results – 1 Crit – 5 High – 5 Med

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