Allocation of Resources Without Limits or Throttling Affecting cbor2 package, versions [,5.9.0)
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-PYTHON-CBOR2-15762225
- published24 Mar 2026
- disclosed23 Mar 2026
- creditromanticpragmatism
Introduced: 23 Mar 2026
NewCVE-2026-26209 (opens in a new tab)How to fix?
Upgrade cbor2 to version 5.9.0 or higher.
Overview
cbor2 is a CBOR (de)serializer with extensive tag support
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the decoding of CBOR payloads. An attacker can cause the application to crash by submitting deeply nested input that triggers uncontrolled recursion.