CVE-2026-42254

MEDIUM
Published Apr 26, 2026 Modified Apr 27, 2026 CWE-706

Description

Hickory DNS hickory-recursor 0.1 through 0.25.2 allows cross-zone poisoning because cached data is not directly associated with a query that triggered a response.

CVSS v3.1 Score

4.0
MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

EPSS — Exploit Prediction

0.0004
Probability of exploitation
0.11%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-706 CWE-706

References

Frequently Asked Questions

What is CVE-2026-42254? +
Hickory DNS hickory-recursor 0.1 through 0.25.2 allows cross-zone poisoning because cached data is not directly associated with a query that triggered a response. It has a CVSS v3.1 base score of 4.0 (MEDIUM).
How severe is CVE-2026-42254? +
CVE-2026-42254 has a CVSS v3.1 score of 4.0 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0004, placing it in the 0th percentile for exploitation probability.
How do I check if I'm vulnerable to CVE-2026-42254? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2014-125125

A path traversal vulnerability exists in A10 Networks AX Loadbalancer versions 2.6.1-GR1-P5, 2.7.0, and earlier. The vulnerability resides in the …
CVE-2024-51746

Gitsign is a keyless Sigstore to signing tool for Git commits with your a GitHub / OIDC identity. gitsign may …
CVE-2025-13437

When zx is invoked with --prefer-local=<path>, the CLI creates a symlink named ./node_modules pointing to <path>/node_modules. Due to a logic …
CVE-2024-35198 9.8

TorchServe is a flexible and easy-to-use tool for serving and scaling PyTorch models in production. TorchServe 's check on allowed_urls …
CVE-2025-65474 9.8

An arbitrary file rename vulnerability in the /admin/manager.php component of EasyImages 2.0 v2.8.6 and below allows attackers to execute arbitrary …
CVE-2025-24813 9.8

Path Equivalence: 'file.Name' (Internal Dot) leading to Remote Code Execution and/or Information disclosure and/or malicious content added to uploaded files …

Don't wait for an exploit

Scan your website for vulnerabilities like CVE-2026-42254 — free, no signup required.

Start Free Scan