{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-115319", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-22T10:11:36.987Z", "datePublished": "2026-10-22T10:57:40.288Z", "dateUpdated": "2026-10-22T10:57:40.288Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-22T10:57:40.288Z"}, "datePublic": "2026-10-21T00:00:00.000Z", "title": "fzf 0.36.0 through 0.74.5 Denial of Service via maskActionContents", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Inefficient Algorithmic Complexity", "cweId": "CWE-407", "type": "CWE"}]}], "affected": [{"vendor": "junegunn", "product": "fzf", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/junegunn/fzf", "versions": [{"version": "0.36.0", "lessThanOrEqual": "0.74.5", "status": "affected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:junegunn:fzf:*:*:*:*:*:*:*:*", "versionStartIncluding": "0.36.0", "versionEndIncluding": "0.74.5"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 2, "baseSeverity": "LOW"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW", "baseScore": 2.5, "baseSeverity": "LOW"}}], "references": [{"url": "https://github.com/junegunn/fzf/commit/b412a450538e5f4a1d7057732e75d945dafa18a6", "tags": ["patch"], "name": "Patch Commit"}, {"url": "https://github.com/junegunn/fzf/blob/v0.74.5/src/options.go#L1680-L1736", "tags": ["technical-description"]}, {"url": "https://github.com/junegunn/fzf", "tags": ["product"]}, {"name": "VulnCheck Advisory: fzf 0.36.0 through 0.74.5 Denial of Service via maskActionContents", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/fzf-0.36.0-through-0.74.5-denial-of-service-via-maskactioncontents"}], "credits": [{"lang": "en", "value": "Zachariah Mithani (AploSec)", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/junegunn/fzf", "product": "fzf", "vendor": "junegunn", "versions": [{"lessThanOrEqual": "0.74.5", "status": "affected", "version": "0.36.0", "versionType": "semver"}]}], "source": "disclosure@vulncheck.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-115319", "lastModified": "2026-10-22T17:40:46.877", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 2.5, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 1.4, "source": "disclosure@vulncheck.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.0, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}]}, "published": "2026-10-22T11:17:50.677", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/junegunn/fzf"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/junegunn/fzf/blob/v0.74.5/src/options.go#L1680-L1736"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/junegunn/fzf/commit/b412a450538e5f4a1d7057732e75d945dafa18a6"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/fzf-0.36.0-through-0.74.5-denial-of-service-via-maskactioncontents"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-407"}], "source": "disclosure@vulncheck.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.36.0,0.74.5]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "fzf", "source": "cna", "vendor": "junegunn"}, "product": "fzf", "vendor": "junegunn"}], "created": "2026-10-22T13:15:06.125894+00:00", "updated": "2026-10-22T13:15:06.433485+00:00", "vendors": ["junegunn", "junegunn$PRODUCT$fzf"]}