Allocation of Resources Without Limits or Throttling Affecting org.springframework:spring-expression package, versions [,7.0.9)
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- published26 Aug 2026
- disclosed20 Aug 2026
- creditYu Bao from PayPal Cyber Security Team
Introduced: 20 Aug 2026
NewCVE-2026-47886 (opens in a new tab)How to fix?
Upgrade org.springframework:spring-expression to version 7.0.9 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the evaluation of user-supplied SpEL expressions containing the power operator (^) with a BigDecimal or BigInteger operand and a large exponent value. An attacker can cause excessive CPU and memory consumption by submitting specially crafted expressions.
Note: This is only exploitable if the application accepts and evaluates untrusted SpEL expressions and a BigDecimal or BigInteger value is accessible within the evaluation context.