HTTP response splitting in Spring Framework - CVE-2026-59314
Published: August 31, 2026
Vulnerability identifier: #VU146395
CSH Severity: Low
CVSS v4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-59314
CWE-ID: CWE-113
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to corrupt HTTP headers or multipart body framing.
The vulnerability exists due to improper neutralization of carriage return and line feed sequences in Content-Disposition header handling when processing untrusted file names. A remote attacker can supply a malicious file name to corrupt HTTP headers or multipart body framing.
User interaction is required to trigger exploitation. The issue affects applications that set Content-Disposition values from untrusted input, including use in outbound multipart request parts, and the header-splitting case applies to non-default or legacy connectors that do not reject malicious header characters.
Affected software
Spring Framework
Library Support for Spring
Library Support for Spring
How to mitigate CVE-2026-59314
Install security update from vendor's website.
Spring Framework - addressed in versions 5.2.26, 5.3.50, 6.0.31, 6.1.29, 6.2.20, 7.0.8.1, 7.0.9
Library Support for Spring - update to 3.5.19
Library Support for Spring - update to 3.5.19