CVE-2024-44930Network attack vector

Log attribution spoofing via trusted forwarding headers

Published Aug 29, 2024 · Updated Mar 14, 2025

Client IP spoofing in Serilog.Enrichers.ClientInfo before 2.1.0 allows remote attackers to falsify source addresses in logs via HTTP headers. ClientIpEnricher selects the first value from an untrusted forwarding header and records it as ClientIp without validating a trusted proxy. An application must enable the client-IP enricher for incoming requests; exploitation corrupts source attribution in audit logs without granting code execution.

CVSS severity6.9
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Client IP spoofing in Serilog.Enrichers.ClientInfo before 2.1.0 allows remote attackers to falsify source addresses in logs via HTTP headers. ClientIpEnricher selects the first value from an untrusted forwarding header and records it as ClientIp without validating a trusted proxy. An application must enable the client-IP enricher for incoming requests; exploitation corrupts source attribution in audit logs without granting code execution.

The record

CVE
CVE-2024-44930
Published
Aug 29, 2024
Updated
Mar 14, 2025
Vendor
Serilog
Product
Serilog
Classifications
CWE-348, CWE-79, T1036
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 14, 2025Record 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 <2.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Serilog · Serilogversion=0 <2.1.0

Published CVSS scores

6.9GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-348Use of Less Trusted Source
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1036Masquerading

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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