CVE-2024-44930

Serilog Client IP Spoofing vulnerability

6.5 MediumFix available

Serilog before v2.1.0 was discovered to contain a Client IP Spoofing vulnerability, which allows attackers to falsify their IP addresses by specifying an arbitrary IP as a value of X-Forwarded-For or Client-Ip headers while performing HTTP requests.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

0.32%Up 0.3 points since Aug 30, 2024

What each source reports

NVD Score used 6.5

Record: CVE-2024-44930
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

CVE List 6.5

Record: CVE-2024-44930
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2024-2505 6.5

Record: EUVD-2024-2505
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-5x5q-cqf6-gj8r 6.9

Serilog Client IP Spoofing vulnerability

Serilog (before v2.1.0) contains a Client IP Spoofing vulnerability, which allows attackers to falsify their IP addresses in log files by specifying an arbitrary IP as a value of X-Forwarded-For or Client-Ip headers while performing HTTP requests.

It is not possible to configure Serilog.Enrichers.ClientInfo to not trust the X-Forwarded-For header.

Record: GHSA-5x5q-cqf6-gj8r
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness: CWE-79, CWE-348
Updated: 2026-11-02

OSV 6.5

Record: CVE-2024-44930
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Updated: 2026-11-02

OSVGHSA-5x5q-cqf6-gj8r 6.9

Serilog Client IP Spoofing vulnerability

It is not possible to configure Serilog.Enrichers.ClientInfo to not trust the X-Forwarded-For header.

Record: GHSA-5x5q-cqf6-gj8r
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness: CWE-348, CWE-79
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`Serilog.Enrichers.ClientInfo` NuGet	before 2.1.0	2.1.0
`Serilog.Enrichers.ClientInfo` NuGet	before 2.1.0, plus listed versions 1.0.01.1.01.1.11.1.21.1.3 Show 8 moreShow less 1.1.41.1.4-dev011.2.01.3.02.0.02.0.12.0.22.0.3	2.1.0

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-44930 is a medium vulnerability (CVSS 6.5) in Serilog, published August 29, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 25th percentile. Fixed in Serilog.Enrichers.ClientInfo 2.1.0.