Allocation of Resources Without Limits or Throttling Affecting buffa package, versions <0.8.0
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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Start learning- Snyk IDSNYK-RUST-BUFFA-18017887
- published19 Jul 2026
- disclosed16 Jul 2026
- creditUnknown
Introduced: 16 Jul 2026
NewCVE-2026-55407 (opens in a new tab)How to fix?
Upgrade buffa to version 0.8.0 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the decode_unknown_field function. An attacker can cause excessive memory allocation by providing specially crafted serialized protobuf input containing nested unknown fields or arbitrarily sized length-delimited unknown fields. This can lead to process crashes due to memory exhaustion when decoding messages from untrusted sources using code generated with preserve_unknown_fields=true.