Allocation of Resources Without Limits or Throttling Affecting pyjwt package, versions [,2.13.0)
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-PYTHON-PYJWT-17053409
- published29 May 2026
- disclosed28 May 2026
- creditAli Firas (thesmartshadow)
Introduced: 28 May 2026
CVE-2026-48525 (opens in a new tab)How to fix?
Upgrade pyjwt to version 2.13.0 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the Base64URL decoding process. An attacker can cause excessive CPU and memory consumption by supplying an arbitrarily large payload segment when verifying detached JWS tokens with the unencoded-payload option enabled.