{"cve":"CVE-2024-23452","nvd":{"published":"2024-02-08T09:15:46.420","modified":"2026-06-17T07:12:58.660","status":"Modified","description":"Request smuggling vulnerability in HTTP server in Apache bRPC 0.9.5~1.7.0 on all platforms allows attacker to smuggle request.\n\nVulnerability Cause Description：\n\nThe http_parser does not comply with the RFC-7230 HTTP 1.1 specification.\n\nAttack scenario:\nIf a message is received with both a Transfer-Encoding and a Content-Length header field, such a message might indicate an attempt to perform request smuggling or response splitting.\nOne particular attack scenario is that a bRPC made http server on the backend receiving requests in one persistent connection from frontend server that uses TE to parse request with the logic that 'chunk' is contained in the TE field. in that case an attacker can smuggle a request into the connection to the backend server. \n\nSolution:\nYou can choose one solution from below:\n1. Upgrade bRPC to version 1.8.0, which fixes this issue. Download link:  https://github.com/apache/brpc/releases/tag/1.8.0\n 2. Apply this patch:  https://github.com/apache/brpc/pull/2518","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":["CWE-444"],"references":["http://www.openwall.com/lists/oss-security/2024/02/08/1","https://github.com/apache/brpc/pull/2518","https://github.com/apache/brpc/releases/tag/1.8.0","https://lists.apache.org/thread/kkvdpwyr2s2yt9qvvxfdzon012898vxd","http://www.openwall.com/lists/oss-security/2024/02/08/1"],"products":["apache:brpc"],"source":"nvd","synced_at":"2026-10-19T21:44:57.175229480+00:00"},"epss":{"cve":"CVE-2024-23452","score":0.01637,"percentile":0.76331,"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."]}