5.3

CVE-2026-41847: spring spring framework Improper Access Control

CVSS: 5.3v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-41847DEBIAN-CVE-2026-41847CGA-6949-8w5v-5gx9
Published 09-06-2026Last modified 09-06-2026
Open JSON

Vulnerability summary

CVE-2026-41847 is a medium (CVSS 5.3) Improper Access Control vulnerability in spring spring framework. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 16.8% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (NVD)
EPSS score
0.26%
0%100%
Low · +0.10 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-06-2026
    PublishedVulnerability first disclosed.
  2. 09-06-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

17%

Versus all other CVEs

30-day change

+0.10 pp

From 0.17% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.26%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard2 products
  • kayenta-2025.2All versions (No fix recorded)
  • kayenta-fips-2025.2All versions (No fix recorded)
Debian1 product
  • libspring-javaAll versions (No fix recorded)
Org.springframework1 product
  • spring-webflux≤ 5.3.39
Spring1 product
Ubuntu1 product
  • libspring-javaAll versions (No fix recorded)
Vmware1 product

6 vendors · 7 products

References

6 links