Inefficient Algorithmic Complexity Affecting github.com/junegunn/fzf/src package, versions <0.73.1
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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- published3 Jul 2026
- disclosed30 Jun 2026
- creditUnknown
Introduced: 30 Jun 2026
CVE-2026-53433 Â (opens in a new tab)How to fix?
Upgrade github.com/junegunn/fzf/src to version 0.73.1 or higher.
Overview
Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity in the --listen process due to inefficient HTTP body processing using repeated string concatenation, which results in quadratic time complexity. An attacker can cause excessive CPU usage and monopolize the single-threaded HTTP server by sending a crafted POST request with many small segments, thereby blocking all other clients.