CVE-2026-43870
Description
A flaw was found in Apache Thrift. This vulnerability encompasses an origin validation error, improper limitation of a pathname to a restricted directory (path traversal), and improper neutralization of CRLF sequences in HTTP headers (HTTP request/response splitting). A remote attacker could exploit these issues to trigger uncontrolled resource consumption, leading to a Denial of Service (DoS) condition. Furthermore, path traversal could allow unauthorized access to files, and HTTP request/response splitting might enable other web-based attacks.
Statement
This Important flaw in Apache Thrift allows a remote attacker to trigger a denial of service through uncontrolled resource consumption. Additionally, the vulnerability enables path traversal for unauthorized file access and HTTP request/response splitting, potentially leading to further web-based attacks in Red Hat products that integrate Apache Thrift.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 8.6 | N/A | 7.3 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | Low | N/A | Low |
| Integrity Impact | Low | N/A | Low |
| Availability Impact | High | N/A | Low |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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