6.1

CVE-2026-47848: broadcom reactor_netty Open Redirect

CVSS: 6.1v3.1MediumAnalyzed
Published 26-08-2026Last modified 26-08-2026
Open JSON

Vulnerability summary

CVE-2026-47848 is a medium (CVSS 6.1) Open Redirect vulnerability in broadcom reactor_netty. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 16.6% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (CVE.org)
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. 26-08-2026
    PublishedVulnerability first disclosed.
  2. 26-08-2026
    Last modifiedVulnerability information updated.

Description

In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier

CVSS metrics

2 scores · 2 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 0.16% 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

Broadcom1 product
  • reactor_netty< 1.0.53 | ≥ 1.1.0, < 1.2.19 | ≥ 1.3.0, < 1.3.6.1
Spring1 product
  • reactor netty≥ 1.3.0, ≤ 1.3.6 | ≥ 1.1.0, ≤ 1.2.18 | ≤ 1.0.52

2 vendors · 2 products

References

1 links