Input validation error in Spring Framework - CVE-2026-41854
Published: August 31, 2026
Vulnerability identifier: #VU146415
CSH Severity: Low
CVSS v4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-41854
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform server-side request forgery.
The vulnerability exists due to incorrect host parsing in uricomponentsbuilder when parsing and validating an externally provided URL string. A remote attacker can supply a crafted URL string to perform server-side request forgery.
User interaction is required.
Affected software
Spring Framework
How to mitigate CVE-2026-41854
Install security update from vendor's website.
Spring Framework - addressed in versions 6.2.18.1, 6.2.19, 7.0.7.1, 7.0.8