Allocation of Resources Without Limits or Throttling Affecting org.springframework.cloud:spring-cloud-function-context package, versions [,4.3.3)[5.0.0-M1, 5.0.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published10 May 2026
- disclosed8 May 2026
- creditUnknown
Introduced: 8 May 2026
CVE-2026-40989 (opens in a new tab)How to fix?
Upgrade org.springframework.cloud:spring-cloud-function-context to version 4.3.3, 5.0.2 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling through the SimpleFunctionRegistry composition. An attacker can exhaust memory or trigger unbounded recursive function composition by supplying crafted function definitions that repeatedly compose the same functions through the catalog lookup path. This can grow the registry’s internal wrapper state without limit and drive the application into excessive memory use, degraded performance, or a crash.
Note: Fixes for earlier branches including 4.2.x, and 3.2.x are available under enterprise support.