{"cve":"CVE-2023-26147","nvd":{"published":"2023-09-29T05:15:46.630","modified":"2026-06-17T05:42:47.000","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-79","CWE-113"],"references":["https://gist.github.com/dellalibera/2be265b56b7b3b00de1a777b9dec0c7b","https://security.snyk.io/vuln/SNYK-UNMANAGED-ITHEWEILIBHV-5730768","https://gist.github.com/dellalibera/2be265b56b7b3b00de1a777b9dec0c7b","https://security.snyk.io/vuln/SNYK-UNMANAGED-ITHEWEILIBHV-5730768"],"products":["ithewei:libhv"],"source":"nvd","synced_at":"2026-10-19T21:39:34.467980132+00:00"},"epss":{"cve":"CVE-2023-26147","score":0.0044,"percentile":0.38254,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}