fzf 0.36.0 through 0.74.5 contains an inefficient algorithmic complexity vulnerability in maskActionContents that allows local attackers to exhaust the --listen HTTP server through quadratic string concatenation. Attackers can repeatedly send POST bodies of about 1 MB to the unauthenticated localhost port, blocking the single-threaded server for about 30 seconds each time.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-407"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115319.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "0.36.0"
},
{
"last_affected": "0.74.5"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"fixed": "b412a450538e5f4a1d7057732e75d945dafa18a6"
}
],
"source": "REFERENCES_COMMIT"
}
]
}