CVE-2026-29057

medium Red Hat
CVSS v3 Base Score
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS Score
0.1%
Exploitation probability in 30 days
Top 77% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Published: March 18, 2026 (57 days ago)
Last Modified: March 18, 2026
Vendor: Red Hat
Source: REDHAT

Description

A request smuggling flaw has been discovered in Next.js. when Next.js rewrites proxy traffic to an external backend, a crafted `DELETE`/`OPTIONS` request using `Transfer-Encoding: chunked` could trigger request boundary disagreement between the proxy and backend. This could allow request smuggling through rewritten routes. An attacker could smuggle a second request to unintended backend routes (for example, internal/admin endpoints), bypassing assumptions that only the configured rewrite destination/path is reachable.

CWE

CWE-444

Affected Products

Red Hat Enterprise Linux 9Red Hat Enterprise Linux AI (RHEL AI) 3Red Hat Trusted Artifact Signerstreams for Apache Kafka 2streams for Apache Kafka 3

References

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