Resource exhaustion in Spring Framework - CVE-2026-41851
Published: August 31, 2026
Vulnerability identifier: #VU146410
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-41851
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in the SpEL expression cache when evaluating user-supplied SpEL expressions. A remote attacker can submit crafted expressions to cause a denial of service.
Exploitation requires that the application accept and evaluate untrusted SpEL expressions and cache parsed SpEL expressions. A high volume of processing is typically required, often involving millions of evaluations, including with a single expression using dynamic inputs.
Affected software
Spring Framework
Crowd Data Center
Bamboo Data Center
Crowd Data Center
Bamboo Data Center
How to mitigate CVE-2026-41851
Install security update from vendor's website.
Spring Framework - addressed in versions 5.3.49, 6.1.28, 6.2.18.1, 6.2.19, 7.0.7.1, 7.0.8
Crowd Data Center - update to 7.2.2
Bamboo Data Center - update to 12.1.10
Crowd Data Center - update to 7.2.2
Bamboo Data Center - update to 12.1.10