Allocation of Resources Without Limits or Throttling Affecting rsync package, versions [3.4.2,3.5.0)
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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- published29 Aug 2026
- disclosed13 Aug 2026
- creditUnknown
Introduced: 13 Aug 2026
NewCVE-2026-70455 (opens in a new tab)How to fix?
Upgrade rsync to version 3.5.0 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the --zt option, which acts as a short alias for --compress-threads. An attacker can exhaust system resources by specifying a large value for --zt, causing the spawning of an unbounded number of Zstandard worker threads on the receiver, leading to thread and memory exhaustion.