# CVE-2026-0397: dnsdist: When the internal webserver is enabled (default is disabled), an attacker might be able to trick an administrator log...

CVE-2026-0397 is fixed in dnsdist on 1 platform, first by DEBIAN-CVE-2026-0397, released March 31, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-0397
- Priority: Routine
- CVSS: 4.3 (medium)
- EPSS: 0.0017
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 31, 2026

## Description

When the internal webserver is enabled (default is disabled), an attacker might be able to trick an administrator logged to the dashboard into visiting a malicious website and extract information about the running configuration from the dashboard. The root cause of the issue is a misconfiguration of the Cross-Origin Resource Sharing (CORS) policy.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | dnsdist Debian 13.5 (trixie) | 1.9.14-0+deb13u1 | [DEBIAN-CVE-2026-0397](https://patchblox.com/security/data/fix/linux/debian-cve-2026-0397.md) | Mar 31, 2026 |
| Linux | dnsdist Debian 14 | 2.0.3-1 | [DEBIAN-CVE-2026-0397](https://patchblox.com/security/data/fix/linux/debian-cve-2026-0397.md) | Mar 31, 2026 |
| Linux | dnsdist opensuse-leap 16.0 | 1.9.13-160000.1.1 | [OPENSUSE-SU-2026:21015-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21015-1.md) | Jun 22, 2026 |
| Linux | dnsdist sles 15.7 | 1.9.12-150700.3.9.1 | [SUSE-SU-2026:1618-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-1618-1.md) | Apr 24, 2026 |
| Linux | dnsdist sles 16.0 | 1.9.13-160000.1.1 | [SUSE-SU-2026:22319-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22319-1.md) | Jun 22, 2026 |

---

Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.