# Pi-hole FTL v6.6.1 and Core v6.4.2 Released!

**URL:** <https://discourse.pi-hole.net/t/pi-hole-ftl-v6-6-1-and-core-v6-4-2-released/85843>\
**Category:** Announcements\
**Created:** [April 24, 2026, 10:15pm UTC](https://discourse.pi-hole.net/t/pi-hole-ftl-v6-6-1-and-core-v6-4-2-released/85843 "2026-04-24T22:15:11Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![PromoFaux](https://discourse-cdn.pi-hole.net/user_avatar/discourse.pi-hole.net/promofaux/32/1545_2.png) [@PromoFaux](https://discourse.pi-hole.net/u/PromoFaux)\
**Post date:** [April 24, 2026, 10:15pm UTC](https://discourse.pi-hole.net/t/pi-hole-ftl-v6-6-1-and-core-v6-4-2-released/85843/1 "2026-04-24T22:15:11Z")

</div>

Originally published at: [https://pi-hole.net/blog/2026/04/24/pi-hole-ftl-v6-6-1-and-core-v6-4-2-released/](https://pi-hole.net/blog/2026/04/24/pi-hole-ftl-v6-6-1-and-core-v6-4-2-released/)

As always, please read through the changelogs before updating with `pihole -up`

Don’t forget, you can use Teleporter to export your configuration. It can be found under the settings menu of the web interface or on the command line with `pihole-FTL --teleporter`

Docker has been tagged as 2026.04.1

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## Highlights

This release is mostly about addressing two security advisories – one in FTL and one in Core. We’d like to thank the researchers who responsibly disclosed these issues.

Full details for both advisories can be found at the following links:

- [pi-hole/pi-hole/security/advisories/GHSA-6w8x-p785-6pm4](https://github.com/pi-hole/pi-hole/security/advisories/GHSA-6w8x-p785-6pm4) reported by [@mjkim610](https://github.com/mjkim610)
- [pi-hole/FTL/security/advisories/GHSA-9cqv-839p-gpq2](https://github.com/pi-hole/FTL/security/advisories/GHSA-9cqv-839p-gpq2) reported by [@anuraagbaishya](https://github.com/anuraagbaishya)

Details of all other fixes can be found below!

* * *

## FTL v6.6.1

### What’s Changed

- Add new `GET /api/config/_properties` endpoint by [@DL6ER](https://github.com/DL6ER) in [#2356](https://github.com/pi-hole/FTL/pull/2356)
- Fix thread-safety issues causing SIGSEGV under concurrent API load by [@DL6ER](https://github.com/DL6ER) in [#2835](https://github.com/pi-hole/FTL/pull/2835)
- fix: fix rare race condition for SHM strings in API handlers by [@DL6ER](https://github.com/DL6ER) in [#2833](https://github.com/pi-hole/FTL/pull/2833)
- Accept punycode domains that libidn2 rejects under IDNA2008 by [@DL6ER](https://github.com/DL6ER) in [#2838](https://github.com/pi-hole/FTL/pull/2838)
- Improve shutdown diagnostics to identify SIGTERM source by [@DL6ER](https://github.com/DL6ER) in [#2839](https://github.com/pi-hole/FTL/pull/2839)
- Resolve empty backtraces when addr2line is not installed by [@DL6ER](https://github.com/DL6ER) in [#2831](https://github.com/pi-hole/FTL/pull/2831)
- Improve thread-safety for concurrent API requests by [@DL6ER](https://github.com/DL6ER) in [#2847](https://github.com/pi-hole/FTL/pull/2847)
- Don’t skip device lookup when resolver.macNames is disabled by [@DL6ER](https://github.com/DL6ER) in [#2846](https://github.com/pi-hole/FTL/pull/2846)
- Fix linker error when compiling w/o optimization by [@aeolio](https://github.com/aeolio) in [#2850](https://github.com/pi-hole/FTL/pull/2850)
- Clarify `dns.blockESNI` wording by [@darkexplosiveqwx](https://github.com/darkexplosiveqwx) in [#2784](https://github.com/pi-hole/FTL/pull/2784)
- Preserve log file path config when fopen fails by [@DL6ER](https://github.com/DL6ER) in [#2834](https://github.com/pi-hole/FTL/pull/2834)

## Security advisories

- [pi-hole/pi-hole/security/advisories/GHSA-6w8x-p785-6pm4](https://github.com/pi-hole/pi-hole/security/advisories/GHSA-6w8x-p785-6pm4)
  - Fixed with :

- [pi-hole/FTL/security/advisories/GHSA-9cqv-839p-gpq2](https://github.com/pi-hole/FTL/security/advisories/GHSA-9cqv-839p-gpq2)
  - Fixed with :

## New Contributors

- [@darkexplosiveqwx](https://github.com/darkexplosiveqwx) made their first contribution in [#2784](https://github.com/pi-hole/FTL/pull/2784)

**Full Changelog** :&nbsp;[v6.6…v6.6.1](https://github.com/pi-hole/FTL/compare/v6.6...v6.6.1)

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## Core v6.4.2

### What’s Changed

- Fix ownership permissions for containing directories in fix\_owner\_per… by [@PromoFaux](https://github.com/PromoFaux) in [#6589](https://github.com/pi-hole/pi-hole/pull/6589)
- Remove reference to /usr/local/bin/COL\_TABLE by [@darkexplosiveqwx](https://github.com/darkexplosiveqwx) in [#6594](https://github.com/pi-hole/pi-hole/pull/6594)
- Skip apt cache update when pihole-meta is current by [@PromoFaux](https://github.com/PromoFaux) in [#6581](https://github.com/pi-hole/pi-hole/pull/6581)
- Set versions in /etc/pihole/versions to null if script fails by [@yubiuser](https://github.com/yubiuser) in [#6550](https://github.com/pi-hole/pi-hole/pull/6550)
- Wipe version file before creating a new one by [@yubiuser](https://github.com/yubiuser) in [#6538](https://github.com/pi-hole/pi-hole/pull/6538)
- Remove redundant touching of logfiles from systemd Service by [@yubiuser](https://github.com/yubiuser) in [#6601](https://github.com/pi-hole/pi-hole/pull/6601)
- Loosen requirements for local file access for gravity by [@yubiuser](https://github.com/yubiuser) in [#6430](https://github.com/pi-hole/pi-hole/pull/6430)
- Fix permission for \*.etag files after gravity run by [@yubiuser](https://github.com/yubiuser) in [#6353](https://github.com/pi-hole/pi-hole/pull/6353)
- add logrotate to DEB and RPM dependencies by [@darkexplosiveqwx](https://github.com/darkexplosiveqwx) in [#6524](https://github.com/pi-hole/pi-hole/pull/6524)
- Improve gravity error message including curl exit code and errormsg by [@rdwebdesign](https://github.com/rdwebdesign) in [#6605](https://github.com/pi-hole/pi-hole/pull/6605)

## Security advisories

- [pi-hole/pi-hole/security/advisories/GHSA-6w8x-p785-6pm4](https://github.com/pi-hole/pi-hole/security/advisories/GHSA-6w8x-p785-6pm4)
  - Fixed with :

**Full Changelog** :&nbsp;[v6.4.1…v6.4.2](https://github.com/pi-hole/pi-hole/compare/v6.4.1...v6.4.2)