Allocation of Resources Without Limits or Throttling Affecting io.micrometer:micrometer-tracing-bridge-brave package, versions [,1.6.7)[1.7.0, 1.7.1)
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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- published23 Aug 2026
- disclosed21 Aug 2026
- creditUnknown
Introduced: 21 Aug 2026
NewCVE-2026-59323 (opens in a new tab)How to fix?
Upgrade io.micrometer:micrometer-tracing-bridge-brave to version 1.6.7, 1.7.1 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling through the contextWithBaggage parsing path in io.micrometer.tracing.brave.bridge.W3CPropagation. An attacker can exhaust CPU and heap by sending a request with a W3C baggage header containing an excessive number of key-value pairs or an oversized header, which the extractor parses without bounding the input. The vulnerable code allocates baggage objects for each parsed entry from untrusted headers, creating garbage-collection pressure and high CPU usage during request processing. In affected applications that accept attacker-controlled baggage headers, this can trigger OutOfMemoryError and crash the service.
Notes
- Additional fixes are available for earlier versions under Enterprise Support (see the Spring Security Advisory for additional details)