CVE-2026-46720Network attack vector

Metric injection via unvalidated StatsD delimiters

Published May 17, 2026 · Updated May 17, 2026

Metric injection in Robert Rothenberg Net::Statsd::Tiny before 0.3.8 allows remote attackers to inject StatsD metrics via untrusted names or set values. The _record routine concatenates metric names and values into StatsD protocol lines without rejecting control characters, colons, or pipes. An application must pass attacker-controlled metric data; injected delimiters then create additional metrics and corrupt monitoring data.

CVSS severity8.2
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Metric injection in Robert Rothenberg Net::Statsd::Tiny before 0.3.8 allows remote attackers to inject StatsD metrics via untrusted names or set values. The _record routine concatenates metric names and values into StatsD protocol lines without rejecting control characters, colons, or pipes. An application must pass attacker-controlled metric data; injected delimiters then create additional metrics and corrupt monitoring data.

The record

CVE
CVE-2026-46720
Published
May 17, 2026
Updated
May 17, 2026
Vendor
Robert Rothenberg
Product
Net::Statsd::Tiny
Classifications
CWE-93, CWE-150, T1565.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 17, 2026CVE publishedPublication date reported by the CVE source.
  2. May 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <0.3.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Robert Rothenberg · Net::Statsd::Tinyversion=0 <0.3.8

Published CVSS scores

8.2CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-93Improper Neutralization of CRLF Sequences ('CRLF Injection')
CWE-150Improper Neutralization of Escape, Meta, or Control Sequences
T1565.002Transmitted Data Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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