CVE-2026-40299

low Red Hat
CVSS v3 Base Score
4.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS Score
0.1%
Exploitation probability in 30 days
Top 81% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Confidentiality
None
Integrity
Low
Availability
None
Published: April 17, 2026 (83 days ago)
Last Modified: April 17, 2026
Vendor: Red Hat
Source: REDHAT

Description

next-intl provides internationalization for Next.js. Applications using the `next-intl` middleware prior to version 4.9.1with `localePrefix: 'as-needed'` could construct URLs where path handling and the WHATWG URL parser resolved a relative redirect target to another host (e.g. scheme-relative `//` or control characters stripped by the URL parser), so the middleware could redirect the browser off-site while the user still started from a trusted app URL. The problem has been patchedin `next-intl@4.9.1`.

CWE

CWE-601

Affected Products

streams for Apache Kafka 2streams for Apache Kafka 3

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 github.com 🔗 github.com