Inefficient regular expression complexity in Spring Framework - CVE-2026-41848
Published: August 31, 2026
Vulnerability identifier: #VU146408
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-41848
CWE-ID: CWE-1333
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 regular expression denial of service in AntPathMatcher when processing an attacker-supplied pattern in match, matchStart, or extractUriTemplateVariables. A remote attacker can provide a crafted pattern to cause a denial of service.
The issue is exposed only if attacker-controlled input is directly or indirectly supplied as the pattern argument to the affected methods.
Affected software
Spring Framework
How to mitigate CVE-2026-41848
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