High

Information Exposure in Netty

  • Disclosed: 30.06.2020
  • Updated: 11.10.2026 13:19

Netty before 3.9.8.Final, 3.10.x before 3.10.3.Final, 4.0.x before 4.0.28.Final, and 4.1.x before 4.1.0.Beta5 and Play Framework 2.x before 2.3.9 might allow remote attackers to bypass the httpOnly flag on cookies and obtain sensitive information by leveraging improper validation of cookie name and value characters.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) io.netty:netty >= 3.10.0, < 3.10.3.Final, < 3.9.8.Final 3.10.3.Final, 3.9.8.Final
Java / Kotlin (Maven) io.netty:netty-parent >= 4.0.0, < 4.0.28.Final 4.0.28.Final
Java / Kotlin (Maven) org.jboss.netty:netty < 3.9.8.Final, >= 3.10.0, < 3.10.3.Final 3.9.8.Final, 3.10.3.Final

References

CVSS score 7.5/10
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE)
CWE-20
Platform
Java / Kotlin (Maven)
Package
io.netty:netty, io.netty:netty-parent, org.jboss.netty:netty
Disclosed
30.06.2020
Updated
11.10.2026 13:19

Sources and licenses

OSV / GitHub Advisory Database - GHSA-xfv3-rrfm-f2rv - CC BY 4.0

Vulnerability history: org.jboss.netty:netty

All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (10) in the archive
Total entries
10
First → latest
10.2019 12.2021
Without a fix
9
Exploited in attacks
0

Severity breakdown

  • Critical 1
  • High 4
  • Medium 5

Disclosures per year

  1. 2019: 1
  2. 2020: 3
  3. 2021: 6
  4. 2022: 0
  5. 2023: 0
  6. 2024: 0
  7. 2025: 0
  8. 2026: 0
Severity:
  1. Information Exposure in Netty this entry
    High · 7.5 CVE-2015-2156 < 3.9.8.Final, >= 3.10.0, < 3.10.3.Final 3.9.8.Final, 3.10.3.Final
  2. Critical · 9.1 CVE-2019-20444 all versions no fix
  3. High · 7.5 CVE-2019-16869 <= 3.2.9.Final no fix

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