7.5

CVE-2026-50010: netty

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2026-50010DEBIAN-CVE-2026-50010CGA-258c-whwc-m2wg
Published 12-06-2026Last modified 18-09-2026
Open JSON

Vulnerability summary

CVE-2026-50010 is a high (CVSS 7.5) vulnerability in netty. EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 53% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.72%
0%100%
Low · +0.27 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 9 · Related 3
OPENSUSE-SU-2026:11033-1RHSA-2026:49700RHSA-2026:53644RHSA-2026:53645RHSA-2026:53646RHSA-2026:76128

Timeline

  1. 12-06-2026
    PublishedVulnerability first disclosed.
  2. 18-09-2026
    Last modifiedVulnerability information updated.

Description

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, SimpleTrustManagerFactory.engineGetTrustManagers() and related paths wrap any user-supplied plain X509TrustManager in X509TrustManagerWrapper, which extends X509ExtendedTrustManager but implements the 3-arg checkServerTrusted(chain, authType, SSLEngine) by discarding the SSLEngine and calling the 2-arg delegate. Because the object now IS an X509ExtendedTrustManager, neither SunJSSE's internal AbstractTrustManagerWrapper nor Netty's own OpenSslX509TrustManagerWrapper will re-wrap it to add endpoint-identification. Consequently, even though Netty 4.2 sets endpointIdentificationAlgorithm="HTTPS" by default, a client built with `SslContextBuilder.forClient().trustManager(somePlainX509TrustManager)` performs no hostname verification at all. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.72%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

+0.27 pp

From 0.46% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.72%

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

Chainguard145 products
  • apache-pulsar-4.0< 4.0.11-r2
  • apache-pulsar-4.1< 4.1.3-r15
  • apache-pulsar-4.2< 4.2.2-r3
  • apache-pulsar-fips-4.0< 4.0.11-r2
  • apache-pulsar-fips-4.1All versions (No fix recorded)
Wolfi43 products
  • apache-pulsar-4.1< 4.1.3-r15
  • apache-pulsar-4.2< 4.2.2-r3
  • cassandra-5.0< 5.0.8-r6
  • celeborn-0.6< 0.6.3-r8 | All versions (No fix recorded)
  • docker-selenium-base< 4.44.0.20260505-r2
Debian1 product
  • nettyAll versions (No fix recorded)
Io.netty1 product
  • netty-handler≥ 4.2.0.Final, < 4.2.15.Final | < 4.1.135.Final
Netty1 product
  • netty≥ 4.2.0.Final, < 4.2.15.Final | < 4.1.135.Final | < 4.1.135 | ≥ 4.2.0, < 4.2.15
Ubuntu1 product
  • nettyAll versions (No fix recorded)

6 vendors · 192 products

References

31 links
Show all 31 references