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CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7 #477
Description
CVE-2026-42955 - Low Severity Vulnerability
Vulnerable Library - freebsd-srcrelease/15.0.0-p7
The FreeBSD src tree publish-only repository. Experimenting with 'simple' pull requests....
Library home page: https://github.com/freebsd/freebsd-src.git
Found in base branches: stable/4.0, master
Vulnerable Source Files (1)
Vulnerability Details
In NLnet Labs Unbound 1.16.2 up to and including 1.25.1, a similar vulnerability as with CVE-2026-40622 in the 'ghost domain names' family of attacks was found in Unbound that could extend the ghost domain window by up to one cached TTL configured value for A/AAAA glue records. Similar to other 'ghost domain names' attacks, an adversary needs to control a (ghost) zone and be able to query a vulnerable Unbound. A single client A/AAAA query can cause Unbound to overwrite the cached expired parent-side glue rrset and essentially extend the ghost domain window by up to one cached TTL configured value ('cache-max-ttl'). In configurations where 'harden-referral-path: yes' is used (non-default configuration), no client query is required since Unbound implicitly performs that query. This is a variant of CVE-2026-40622 which only addressed the NS query.
Publish Date: 2026-07-22
URL: CVE-2026-42955
CVSS 3 Score Details (3.7)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: Low
- Availability Impact: None
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Activity
[-]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/-][+]CVE-2026-42955 (Low) detected in src4.0.4[/+][-]CVE-2026-42955 (Low) detected in src4.0.4[/-][+]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/+][-]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/-][+]CVE-2026-42955 (Low) detected in src4.0.4[/+][-]CVE-2026-42955 (Low) detected in src4.0.4[/-][+]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/+][-]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/-][+]CVE-2026-42955 (Low) detected in src4.0.4[/+][-]CVE-2026-42955 (Low) detected in src4.0.4[/-][+]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/+][-]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/-][+]CVE-2026-42955 (Low) detected in src4.0.4[/+][-]CVE-2026-42955 (Low) detected in src4.0.4[/-][+]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/+][-]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/-][+]CVE-2026-42955 (Low) detected in src4.0.4[/+][-]CVE-2026-42955 (Low) detected in src4.0.4[/-][+]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/+][-]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/-][+]CVE-2026-42955 (Low) detected in src4.0.4[/+][-]CVE-2026-42955 (Low) detected in src4.0.4[/-][+]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/+][-]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/-][+]CVE-2026-42955 (Low) detected in src4.0.4[/+][-]CVE-2026-42955 (Low) detected in src4.0.4[/-][+]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/+][-]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/-][+]CVE-2026-42955 (Low) detected in src4.0.4[/+][-]CVE-2026-42955 (Low) detected in src4.0.4[/-][+]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/+][-]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/-][+]CVE-2026-42955 (Low) detected in src4.0.4[/+]mend-bolt-for-github commentedon Sep 18, 2026
✔️ This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.
[-]CVE-2026-42955 (Low) detected in src4.0.4[/-][+]CVE-2026-42955 (Low) detected in src4.0.4 - autoclosed[/+]mend-bolt-for-github commentedon Sep 18, 2026
✔️ This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.
[-]CVE-2026-42955 (Low) detected in src4.0.4 - autoclosed[/-][+]CVE-2026-42955 (Low) detected in freebsd-srcrelease/15.0.0-p7[/+]mend-bolt-for-github commentedon Oct 7, 2026
ℹ️ This issue was automatically re-opened by Mend because the vulnerable library in the specific branch(es) has been detected in the Mend inventory.