fzf: fzf is vulnerable to a Denial of Service (DoS) due to inefficient HTTP body processing in the --listen mode due to in...
CVE-2026-53433 is fixed in fzf on 1 platform by DEBIAN-CVE-2026-53433 (version 0.73.1-1), released July 1, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| fzf · Debian 14 | 0.73.1-1 | DEBIAN-CVE-2026-53433 | Jul 1, 2026 |
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