{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-113680", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-20T14:51:02.127Z", "datePublished": "2026-10-20T15:40:41.101Z", "dateUpdated": "2026-10-20T15:40:41.101Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-20T15:40:41.101Z"}, "datePublic": "2026-10-19T21:41:19.000Z", "title": "HarfBuzz 8.0.0 through 14.6.0 WebAssembly Shaper NULL Pointer Dereference DoS", "descriptions": [{"lang": "en", "value": "HarfBuzz from 8.0.0 through 14.6.0 contains a NULL pointer dereference vulnerability in the experimental WebAssembly shaper host imports buffer_set_contents, face_create, and font_set_coords. Attackers can supply a crafted font whose embedded wasm module passes out-of-range addresses with non-zero lengths, crashing any application that shapes text with the font."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "NULL Pointer Dereference", "cweId": "CWE-476", "type": "CWE"}]}], "affected": [{"vendor": "harfbuzz", "product": "harfbuzz", "packageURL": "pkg:github/harfbuzz/harfbuzz", "defaultStatus": "unaffected", "versions": [{"version": "8.0.0", "lessThanOrEqual": "14.6.0", "status": "affected", "versionType": "semver"}], "repo": "https://github.com/harfbuzz/harfbuzz"}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:harfbuzz_project:harfbuzz:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.0.0", "versionEndIncluding": "14.6.0"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM"}}], "references": [{"url": "https://github.com/harfbuzz/harfbuzz/pull/6414", "tags": ["patch", "issue-tracking"]}, {"url": "https://github.com/harfbuzz/harfbuzz/commit/a71aa86c2bac114fafb6b47f8da02024ecb44fa6", "tags": ["patch"]}, {"url": "https://github.com/harfbuzz/harfbuzz/blob/14.6.0/src/hb-wasm-api-buffer.hh#L153-L181", "tags": ["technical-description"]}, {"url": "https://github.com/harfbuzz/harfbuzz/blob/14.6.0/src/hb-wasm-api-face.hh#L34-L49", "tags": ["technical-description"]}, {"url": "https://github.com/harfbuzz/harfbuzz/blob/14.6.0/src/hb-wasm-api-font.hh#L241-L258", "tags": ["technical-description"]}, {"name": "VulnCheck Advisory: HarfBuzz 8.0.0 through 14.6.0 WebAssembly Shaper NULL Pointer Dereference DoS", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/harfbuzz-8.0.0-through-14.6.0-webassembly-shaper-null-pointer-dereference-dos"}], "credits": [{"lang": "en", "value": "Aziz Elbelaychy (Ostorlab)", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageURL": "pkg:github/harfbuzz/harfbuzz", "product": "harfbuzz", "repo": "https://github.com/harfbuzz/harfbuzz", "vendor": "harfbuzz", "versions": [{"lessThanOrEqual": "14.6.0", "status": "affected", "version": "8.0.0", "versionType": "semver"}]}], "source": "disclosure@vulncheck.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "HarfBuzz from 8.0.0 through 14.6.0 contains a NULL pointer dereference vulnerability in the experimental WebAssembly shaper host imports buffer_set_contents, face_create, and font_set_coords. Attackers can supply a crafted font whose embedded wasm module passes out-of-range addresses with non-zero lengths, crashing any application that shapes text with the font."}], "id": "CVE-2026-113680", "lastModified": "2026-10-20T20:11:29.833", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "disclosure@vulncheck.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.8, "baseSeverity": "MEDIUM", "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": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/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": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}]}, "published": "2026-10-20T16:17:12.923", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/harfbuzz/harfbuzz/blob/14.6.0/src/hb-wasm-api-buffer.hh#L153-L181"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/harfbuzz/harfbuzz/blob/14.6.0/src/hb-wasm-api-face.hh#L34-L49"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/harfbuzz/harfbuzz/blob/14.6.0/src/hb-wasm-api-font.hh#L241-L258"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/harfbuzz/harfbuzz/commit/a71aa86c2bac114fafb6b47f8da02024ecb44fa6"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/harfbuzz/harfbuzz/pull/6414"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/harfbuzz-8.0.0-through-14.6.0-webassembly-shaper-null-pointer-dereference-dos"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "disclosure@vulncheck.com", "type": "Primary"}]}

{"bugzilla": {"description": "harfbuzz: harfbuzz: Denial of Service via crafted font in WebAssembly shaper", "id": "2556290", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2556290"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["A flaw was found in HarfBuzz. This vulnerability allows an attacker to cause a Denial of Service (DoS) by supplying a specially crafted font containing an embedded WebAssembly (Wasm) module. When an application shapes text using the malicious font, the module passes out-of-range memory addresses to host import functions, triggering a NULL pointer dereference and crashing the application."], "name": "CVE-2026-113680", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "harfbuzz", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-10-20T15:40:41Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-113680\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-113680\nhttps://github.com/harfbuzz/harfbuzz/blob/14.6.0/src/hb-wasm-api-buffer.hh#L153-L181\nhttps://github.com/harfbuzz/harfbuzz/blob/14.6.0/src/hb-wasm-api-face.hh#L34-L49\nhttps://github.com/harfbuzz/harfbuzz/blob/14.6.0/src/hb-wasm-api-font.hh#L241-L258\nhttps://github.com/harfbuzz/harfbuzz/commit/a71aa86c2bac114fafb6b47f8da02024ecb44fa6\nhttps://github.com/harfbuzz/harfbuzz/pull/6414\nhttps://www.vulncheck.com/advisories/harfbuzz-8.0.0-through-14.6.0-webassembly-shaper-null-pointer-dereference-dos"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.0.0,14.6.0]"}}], "enrichment": {"confidence": 81.0, "confidence_source": "matching", "scores": [{"score": 81.0, "source": "matching"}]}, "original": {"product": "harfbuzz", "source": "cna", "vendor": "harfbuzz"}, "product": "harfbuzz", "vendor": "harfbuzz_project"}], "created": "2026-10-20T18:00:16.196023+00:00", "updated": "2026-10-20T20:15:06.743686+00:00", "vendors": ["harfbuzz_project", "harfbuzz_project$PRODUCT$harfbuzz"]}