CVE-2026-41849
Description
An integer overflow in Spring Framework's SpEL allows DoS via crafted expressions, affecting versions 5.3.0-5.3.48.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
An integer overflow in Spring Framework's SpEL allows DoS via crafted expressions, affecting versions 5.3.0-5.3.48.
Vulnerability
An integer overflow vulnerability exists in the evaluation logic of the Spring Expression Language (SpEL) within Spring Framework versions 5.3.0 through 5.3.48. An application is vulnerable when it evaluates untrusted or user-controlled SpEL expressions [1].
Exploitation
An attacker can exploit this vulnerability by supplying a specially crafted SpEL expression. This expression triggers excessive resource consumption, leading to a Denial of Service (DoS). No specific privileges or user interaction are required, and the vulnerability is exploitable over the network [1].
Impact
Successful exploitation of this vulnerability results in a Denial of Service (DoS) due to excessive resource consumption. This prevents legitimate users from accessing the affected application [1].
Mitigation
Users of affected versions should upgrade to Spring Framework version 5.3.49 or later. Version 5.3.49 is the fixed version for the 5.3.x line. No further mitigation steps are necessary beyond upgrading [1].
AI Insight generated on Jun 9, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
1- Range: 5.3.0 - 5.3.48
Patches
0No patches discovered yet.
Vulnerability mechanics
No source-code context for this CVE — mechanics is only generated when we can read the actual fix diff. Without that, the four sections (root cause, attack vector, affected code, fix) would be speculation rather than analysis.
References
1News mentions
1- Spring Framework: 13 Vulnerabilities Disclosed on June 9, 2026Vypr Intelligence · Jun 9, 2026