CVE-2026-41847CWE-284

Spring Framework Security Filter Bypass in WebFlux Kotlin Router DSL

Medium · published June 9, 2026

CVSS v3.1
4.8
EPSS
0%
Percentile
17.1
In the wild
Unconfirmed
What it is

Spring WebFlux applications may be vulnerable to a security bypass when using the Kotlin Router DSL.

Affected versions:

Spring Framework 5.3.0 through 5.3.48.

The record
Technical detail
CVSS v3.1
4.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00262 · 17.1th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-06-09T03:51Z
EPSS history
Timeline
  • 09 JUN 03:51Z
    Spring Framework Security Filter Bypass in WebFlux Kotlin Router DSL
    cvelistv5