CVE-2026-34077

HIGH

CVSS v3.1: 7.5

NetworkNo privilegesNo user interactionResource ExhaustionVendor advisory ref

Source data as of:

At a glance

Severity
HIGH
CVSS
7.5 v3.1 · NVD
EPSS
EPSS not provided by FIRST.org for this CVE
CISA KEV
No
Type
Resource Exhaustion · NVD CWE
Attack conditions (CVSS vector)
NetworkNo privilegesNo user interaction · Source: NVD Vector
Published
2026-06-02 · Modified: 2026-06-02
References
Jump to references (1)

CVSS / EPSS / KEV

CVSS v3.1 7.5 / 10 HIGH Source: NVD
EPSS — EPSS not provided by FIRST.org for this CVE Source: FIRST.org
CISA KEV No Source: CISA

Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources

Description

React Router is a router for React. In versions 7.7.0 through 7.13.1, when using React Router's unstable React Server Components (RSC) APIs, there is a potential client-side Cross-Site Scripting (XSS) vulnerability in the RSC redirect handling if redirects come from untrusted sources. This does not impact applications that are not using the unstable RSC APIs in React Router. This is patched in version 7.13.2.

Record details

CVE ID
CVE-2026-34077
CVSS (v3.1)
7.5 (HIGH)
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability subscore
3.9
Impact subscore
3.6
CISA KEV
No
Weakness (CWE)
CWE-770
Affected configurations (CPE)
0
Published
2026-06-02
Modified
2026-06-02
Status
Received

References

Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.

Related records

Other records sharing a factual facet, for cross-reference. A descriptive neighbourhood — ordering does not imply priority and is not a recommendation.

Same weakness type (CWE)

CVE-2026-28299 HIGH CVSS 8.2 CVE-2026-48597 HIGH CVSS 8.2 CVE-2026-48862 HIGH CVSS 8.2 CVE-2026-49754 HIGH CVSS 8.2

Published the same year

CVE-2026-0072 CRITICAL CVSS 10.0 CVE-2026-40965 CRITICAL CVSS 10.0 CVE-2026-7312 CRITICAL CVSS 10.0 CVE-2026-40089 CRITICAL CVSS 9.9
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