CVE-2025-43864

Description

A flaw was found in the React Router. This vulnerability allows an attacker to trigger a rendering error via a crafted X-React-Router-SPA-Mode header, which can result in cache poisoning. If a caching system is in place, the corrupted error response may be cached and served to subsequent users, significantly impacting application availability.

Statement

The severity of this vulnerability is rated Moderate, as it does not impact system availability. The effects are confined to the application layer, specifically involving data manipulation and potential cache poisoning, without compromising the underlying system stability.

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).

The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 Score Breakdown

Red HatNVDcve.org
Base Score5.3N/AN/A
Attack VectorNetworkN/AN/A
Attack ComplexityLowN/AN/A
Privileges RequiredNoneN/AN/A
User InteractionNoneN/AN/A
ScopeUnchangedN/AN/A
ConfidentialityNoneN/AN/A
Integrity ImpactNoneN/AN/A
Availability ImpactLowN/AN/A

Vector

Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Understanding the Weakness (CWE)

CWE-755

Other

Technical Impact: Other

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