Resource exhaustion in Netty - CVE-2026-73507

Vulnerability identifier: #VU139252

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-73507

CWE-ID: CWE-400

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources in XmlFrameDecoder. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Netty
Crowd Data Center
Confluence Data Center
Jira Software Data Center
Jira Service Management Data Center
Bamboo Data Center

Install updates from vendor's website.

Netty - addressed in versions 4.1.136, 4.2.16
Crowd Data Center - update to 7.2.2
Confluence Data Center - addressed in versions 9.2.24, 10.2.17
Jira Software Data Center - addressed in versions 9.12.38, 10.3.24, 11.3.11
Jira Service Management Data Center - addressed in versions 10.3.24, 11.3.10
Bamboo Data Center - addressed in versions 10.2.22, 12.1.10

• https://github.com/netty/netty/security/advisories/GHSA-v74w-7mr3-4qg3

• Multiple vulnerabilities in Netty
• Multiple vulnerabilities in Bamboo Data Center
• Multiple vulnerabilities in Confluence Data Center
• Multiple vulnerabilities in Crowd Data Center
• Multiple vulnerabilities in Jira Service Management Data Center
• Multiple vulnerabilities in Jira Software Data Center