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vuln-cve/data/2026/84xxx/CVE-2026-84384.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-84384",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-09-01T16:27:58.131Z",
"datePublished": "2026-09-18T15:58:21.860Z",
"dateUpdated": "2026-09-18T17:30:52.628Z"
},
"containers": {
"cna": {
"title": "libheif: brotli/zlib decompression paths lack output-size limits, allowing decompression-bomb OOM/DoS",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-409",
"lang": "en",
"description": "CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/strukturag/libheif/security/advisories/GHSA-24wx-9w62-c96w",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/strukturag/libheif/security/advisories/GHSA-24wx-9w62-c96w"
},
{
"name": "https://github.com/strukturag/libheif/commit/21893e8f66c8b79363ca2809391b07d35e1a95ec",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/strukturag/libheif/commit/21893e8f66c8b79363ca2809391b07d35e1a95ec"
},
{
"name": "https://github.com/strukturag/libheif/releases/tag/v1.23.2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/strukturag/libheif/releases/tag/v1.23.2"
}
],
"affected": [
{
"vendor": "strukturag",
"product": "libheif",
"versions": [
{
"version": ">= 1.19.0, < 1.23.2",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-09-18T15:58:21.860Z"
},
"descriptions": [
{
"lang": "en",
"value": "libheif is a HEIF and AVIF file format decoder and encoder. From 1.19.0 until 1.23.2, crafted HEIF or AVIF mime metadata and unci image data can cause decompress_brotli() and do_inflate() to grow accumulated output without an effective size limit or MemoryHandle accounting. The brotli path has no output bound, while the zlib path checks only a small temporary buffer in a branch that valid streams do not reach, and overlapping icef units can decompress the same payload repeatedly. HeifContext::interpret_heif_file_images() processes multiple compressed metadata items during file opening, allowing a small file to consume unbounded memory and terminate the process. This issue is fixed in version 1.23.2."
}
],
"source": {
"advisory": "GHSA-24wx-9w62-c96w",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/strukturag/libheif/security/advisories/GHSA-24wx-9w62-c96w",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-09-18T17:30:24.859004Z",
"id": "CVE-2026-84384",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-09-18T17:30:52.628Z"
}
}
]
}
}