High
harfbuzz — security advisory
HarfBuzz 8.0.0 through 14.6.0 contains an out-of-bounds write vulnerability in the experimental WebAssembly shaper because the font_glyph_to_string import has a wrong WAMR signature. Attackers can supply a crafted font whose wasm module places the output buffer near linear memory's end, writing glyph-name bytes into host memory to crash or corrupt applications.
- Products
- harfbuzz
- Affected versions
- 10.0.1-1, 10.1.0-1, 10.1.0-2, 10.2.0-1, 10.2.0-1+deb13u1, 10.2.0-2, 11.4.5-1, 11.5.0-1, 12.1.0-1, 12.2.0-1, 12.3.0-1, 12.3.0-2, 12.3.0-3, 12.3.0-4, 12.3.1-1, 12.3.2-1, 12.3.2-2, 6.0.0+dfsg-3, 8.0.0-1, 8.0.0-2, 8.0.0-3, 8.0.1-1, 8.3.0-1, 8.3.0-2, 9.0.0-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-113679
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 03:19 UTC · Revision 1
Source evidence
HarfBuzz 8.0.0 through 14.6.0 contains an out-of-bounds write vulnerability in the experimental WebAssembly shaper because the font_glyph_to_string import has a wrong WAMR signature. Attackers can supply a crafted font whose wasm module places the output buffer near linear memory's end, writing glyph-name bytes into host memory to crash or corrupt applications.
osv:DEBIAN-CVE-2026-113679
harfbuzz
Fixed versions: Not specified
harfbuzz
Fixed versions: Not specified
harfbuzz
Fixed versions: Not specified
Complete source record
{
"id": "bab5fa80fab44a87b8c8807816f1960c06b0a91fb2c1edb2b376a1a7dc6785eb",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-113679",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-113679",
"summary": "HarfBuzz 8.0.0 through 14.6.0 contains an out-of-bounds write vulnerability in the experimental WebAssembly shaper because the font_glyph_to_string import has a wrong WAMR signature. Attackers can supply a crafted font whose wasm module places the output buffer near linear memory's end, writing glyph-name bytes into host memory to crash or corrupt applications.",
"evidence": "osv:DEBIAN-CVE-2026-113679",
"products": [
{
"name": {
"value": "harfbuzz",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "10.0.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "10.1.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "10.1.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "10.2.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "10.2.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "11.4.5-1",
"evidence": "/affected/0/versions"
},
{
"value": "11.5.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "12.1.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "12.2.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "12.3.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "12.3.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "12.3.0-3",
"evidence": "/affected/0/versions"
},
{
"value": "12.3.0-4",
"evidence": "/affected/0/versions"
},
{
"value": "12.3.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "12.3.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "12.3.2-2",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.0+dfsg-3",
"evidence": "/affected/0/versions"
},
{
"value": "8.0.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "8.0.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "8.0.0-3",
"evidence": "/affected/0/versions"
},
{
"value": "8.0.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "8.3.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "8.3.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "9.0.0-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "harfbuzz",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "10.2.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "10.2.0-1+deb13u1",
"evidence": "/affected/1/versions"
},
{
"value": "10.2.0-2",
"evidence": "/affected/1/versions"
},
{
"value": "11.4.5-1",
"evidence": "/affected/1/versions"
},
{
"value": "11.5.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "12.1.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "12.2.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "12.3.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "12.3.0-2",
"evidence": "/affected/1/versions"
},
{
"value": "12.3.0-3",
"evidence": "/affected/1/versions"
},
{
"value": "12.3.0-4",
"evidence": "/affected/1/versions"
},
{
"value": "12.3.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "12.3.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "12.3.2-2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "harfbuzz",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "10.2.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "10.2.0-2",
"evidence": "/affected/2/versions"
},
{
"value": "11.4.5-1",
"evidence": "/affected/2/versions"
},
{
"value": "11.5.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "12.1.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "12.2.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "12.3.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "12.3.0-2",
"evidence": "/affected/2/versions"
},
{
"value": "12.3.0-3",
"evidence": "/affected/2/versions"
},
{
"value": "12.3.0-4",
"evidence": "/affected/2/versions"
},
{
"value": "12.3.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "12.3.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "12.3.2-2",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-113679",
"aliases": [
"DEBIAN-CVE-2026-113679"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/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"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "harfbuzz",
"purl": "pkg:deb/debian/harfbuzz?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"10.0.1-1",
"10.1.0-1",
"10.1.0-2",
"10.2.0-1",
"10.2.0-2",
"11.4.5-1",
"11.5.0-1",
"12.1.0-1",
"12.2.0-1",
"12.3.0-1",
"12.3.0-2",
"12.3.0-3",
"12.3.0-4",
"12.3.1-1",
"12.3.2-1",
"12.3.2-2",
"6.0.0+dfsg-3",
"8.0.0-1",
"8.0.0-2",
"8.0.0-3",
"8.0.1-1",
"8.3.0-1",
"8.3.0-2",
"9.0.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-113679.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "harfbuzz",
"purl": "pkg:deb/debian/harfbuzz?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"10.2.0-1",
"10.2.0-1+deb13u1",
"10.2.0-2",
"11.4.5-1",
"11.5.0-1",
"12.1.0-1",
"12.2.0-1",
"12.3.0-1",
"12.3.0-2",
"12.3.0-3",
"12.3.0-4",
"12.3.1-1",
"12.3.2-1",
"12.3.2-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-113679.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "harfbuzz",
"purl": "pkg:deb/debian/harfbuzz?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"10.2.0-1",
"10.2.0-2",
"11.4.5-1",
"11.5.0-1",
"12.1.0-1",
"12.2.0-1",
"12.3.0-1",
"12.3.0-2",
"12.3.0-3",
"12.3.0-4",
"12.3.1-1",
"12.3.2-1",
"12.3.2-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-113679.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T22:00:06.339978668Z",
"provider": "osv",
"upstream": [
"CVE-2026-113679"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-113679"
]
},
"related_cves": [
{
"value": "CVE-2026-113679",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 427049,
"published_at": "2026-10-20T16:17:12.77+00:00"
}