Allocation of Resources Without Limits or Throttling Affecting com.fasterxml.jackson.dataformat:jackson-dataformat-cbor package, versions [2.16.0,2.18.10)[2.19.0-rc2,2.21.6)[2.22.0,2.22.2)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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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Start learning- Snyk IDSNYK-JAVA-COMFASTERXMLJACKSONDATAFORMAT-20416727
- published4 Oct 2026
- disclosed1 Oct 2026
- credittinyb0y
Introduced: 1 Oct 2026
NewCVE-2026-68495 (opens in a new tab)How to fix?
Upgrade com.fasterxml.jackson.dataformat:jackson-dataformat-cbor to version 2.18.10, 2.21.6, 2.22.2 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in CBORParser._decodeLongerName(), CBORParser._decodeChunkedName(), and SmileParser._handleLongFieldName(), which accumulate a decoded property name without applying the maxNameLength constraint that exists to bound exactly that allocation. An attacker can exhaust the heap and terminate the process by submitting a document whose single property name is as long as they are able to transmit. This requires only that the application parse untrusted Smile or CBOR input through an ObjectMapper or the format factories, and no configuration prevents it, since the setting that would is the one not being enforced.