| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/junegunn/fzf | < 0.73.1 | 0.73.1 |
| fzf | < 0.73.1 | 0.73.1 |
fzf is vulnerable to a Denial of Service (DoS) due to inefficient HTTP body processing in the --listen mode due to inefficient HTTP body processing using repeated string concatenation, resulting in quadratic time complexity (O(n²)). A crafted POST request with many small segments can trigger excessive CPU usage during request handling.This allows a single malicious request to monopolize the single‑threaded HTTP server, blocking all other clients and resulting in denial of service.
This issue was fixed in version 0.73.1.
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