7.5

CVE-2026-62380: netty

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-62380DEBIAN-CVE-2026-62380CGA-7954-jmhq-8fx7
Published 22-08-2026Last modified 26-08-2026
Open JSON

Vulnerability summary

CVE-2026-62380 is a high (CVSS 7.5) vulnerability in netty. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 15.7% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.25%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:11882-1SUSE-SU-2026:4391-1

Timeline

  1. 22-08-2026
    PublishedVulnerability first disclosed.
  2. 26-08-2026
    Last modifiedVulnerability information updated.

Description

Netty (io.netty:netty-codec-socks) versions 4.2.0.Final through 4.2.16.Final and 4.1.x through 4.1.136.Final contain null byte, CRLF, and credential injection vulnerabilities in the SOCKS4 (Socks4ClientEncoder) and SOCKS5 (Socks5ClientEncoder) client encoders, which fail to validate domain address and authentication (username/password) fields. An attacker able to control these fields can inject null bytes or CRLF characters to truncate or alter values, potentially enabling domain spoofing, SOCKS4 userid truncation, authentication data injection, and protocol confusion. Fixed in 4.2.17.Final and 4.1.137.Final.

CVSS metrics

7 scores · 5 sources · 2 versions

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

0.00 pp

From 0.25% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.25%

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

Chainguard1 product
  • keycloak-fips-26.7-iamguarded-fips< 26.7.4-r3
Debian1 product
  • nettyAll versions (No fix recorded)
Netty1 product
  • netty≥ 4.2.0.Final, < 4.2.16.Final | < 4.1.137.Final | < 4.1.137 | ≥ 4.2.0, < 4.2.17
Ubuntu1 product
  • nettyAll versions (No fix recorded)

4 vendors · 4 products

References

7 links