Allocation of Resources Without Limits or Throttling Affecting libmysqlclient package, versions [8.0.25,8.1.0)
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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- published24 Apr 2026
- disclosed21 Apr 2026
- creditUnknown
Introduced: 21 Apr 2026
NewCVE-2026-21998 (opens in a new tab)How to fix?
Upgrade libmysqlclient to version 8.1.0 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the Optimizer component. An attacker can cause the server to hang or crash repeatedly by sending specially crafted requests over the network. This is only exploitable if the attacker has high privileges and network access to the server.