CVE-2023-26147

Name: CVE-2023-26147
Creator: NVD / NIST
Published: 2023-09-29T05:15:46.63+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2023-26147 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. All versions of the package ithewei/libhv are vulnerable to HTTP Response Splitting when untrusted user input is used to build headers values. An attacker can add the \r\n (carriage return line feeds) characters to end the HTTP response headers and inject malicious content, like for example additional headers or new response body, leading to a potential XSS vulnerability.. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

All versions of the package ithewei/libhv are vulnerable to HTTP Response Splitting when untrusted user input is used to build headers values. An attacker can add the \r\n (carriage return line feeds) characters to end the HTTP response headers and inject malicious content, like for example additional headers or new response body, leading to a potential XSS vulnerability.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.38%

29.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Ithewei	Libhv	All versions

References

https://gist.github.com/dellalibera/2be265b56b7b3b00de1a777b9dec0c7bExploit, Third Party Advisory
https://security.snyk.io/vuln/SNYK-UNMANAGED-ITHEWEILIBHV-5730768Third Party Advisory
https://gist.github.com/dellalibera/2be265b56b7b3b00de1a777b9dec0c7bExploit, Third Party Advisory
https://security.snyk.io/vuln/SNYK-UNMANAGED-ITHEWEILIBHV-5730768Third Party Advisory

Timeline

Published: Sep 29, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-26147?

How severe is CVE-2023-26147?

CVE-2023-26147 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2023-26147?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-26147?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST