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vuln-cve/data/2026/45xxx/CVE-2026-45696.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-45696",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-05-13T04:38:01.164Z",
"datePublished": "2026-06-18T20:31:56.603Z",
"dateUpdated": "2026-07-15T00:52:21.623Z"
},
"containers": {
"cna": {
"title": "OpenEXR HTJ2K decoder heap buffer over-read in ht_undo_impl() (DoS)",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-122",
"lang": "en",
"description": "CWE-122: Heap-based Buffer Overflow",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "HIGH",
"baseScore": 8.3,
"baseSeverity": "HIGH",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-gjpj-qv64-vwhf",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-gjpj-qv64-vwhf"
},
{
"name": "https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.12",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.12"
}
],
"affected": [
{
"vendor": "AcademySoftwareFoundation",
"product": "openexr",
"versions": [
{
"version": ">= 3.4.0, < 3.4.11",
"status": "affected"
}
]
}
],
"providerMetadata": {
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"shortName": "GitHub_M",
"dateUpdated": "2026-06-18T20:31:56.603Z"
},
"descriptions": [
{
"lang": "en",
"value": "OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions 3.4.0 through 3.4.11, the HTJ2K (High-Throughput JPEG 2000) decoder, ht_undo_impl() in OpenEXRCore is vulnerable to a heap-buffer-overflow READ. The ht_undo_imp function copies decoded pixels out of a per-line OpenJPH buffer using the EXR channel's declared width as the iteration count. The codestream embedded in the EXR chunk can declare different (smaller) tile/line dimensions than the EXR header advertises, but ht_undo_impl() does not validate this — it pulls width 32-bit samples from cur_line->i32[] without checking the OpenJPH line buffer's actual length. A crafted EXR file produces a 4-byte heap-buffer-overflow READ immediately after a buffer allocated by ojph::local::codestream::finalize_alloc(). The bug is reachable through the standard scanline-decode entry point used by every consumer of exr_decoding_run/Imf::checkOpenEXRFile, including thumbnailers, asset pipelines, and the exrcheck utility — i.e. any application that opens untrusted EXR files. The result is a deterministic crash (DoS) and potential adjacent-heap leak. This issue has been fixed in version 3.4.12."
}
],
"source": {
"advisory": "GHSA-gjpj-qv64-vwhf",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-gjpj-qv64-vwhf",
"tags": [
"exploit"
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],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-06-22T15:34:14.896018Z",
"id": "CVE-2026-45696",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"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": "2026-06-22T17:16:26.326Z"
}
},
{
"affected": [
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10"
],
"defaultStatus": "unaffected",
"packageName": "OpenEXR",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:6"
],
"defaultStatus": "unknown",
"packageName": "OpenEXR",
"product": "Red Hat Enterprise Linux 6",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:7"
],
"defaultStatus": "unaffected",
"packageName": "OpenEXR",
"product": "Red Hat Enterprise Linux 7",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:8"
],
"defaultStatus": "unaffected",
"packageName": "OpenEXR",
"product": "Red Hat Enterprise Linux 8",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
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],
"defaultStatus": "unaffected",
"packageName": "OpenEXR",
"product": "Red Hat Enterprise Linux 9",
"vendor": "Red Hat"
}
],
"datePublic": "2026-06-18T20:31:56.603Z",
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in the OpenEXR image library. If an application opens a maliciously crafted EXR image file, it triggers a memory error. An attacker can use this to crash the application—causing a denial of service (DoS)—and potentially view sensitive information from the application's memory. Any system that processes untrusted EXR files is at risk."
}
],
"metrics": [
{
"other": {
"content": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"value": "Important"
},
"type": "Red Hat severity rating"
}
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-125",
"description": "Out-of-bounds Read",
"lang": "en",
"type": "CWE"
}
]
}
],
"references": [
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-45696"
},
{
"name": "RHBZ#2490597",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2490597"
},
{
"tags": [
"x_sadp-csaf-vex"
],
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45696.json"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-06-18T22:01:06.736Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-06-18T20:31:56.603Z",
"value": "Made public."
}
],
"title": "OpenEXR: OpenEXR: Denial of Service and potential information disclosure via crafted EXR file",
"workarounds": [
{
"lang": "en",
"value": "To minimize risk, avoid opening or processing EXR image files from untrusted or unknown sources. For environments that must process external files, run the handling applications within a sandboxed environment to restrict their privileges and limit the damage a potential exploit can cause."
}
],
"x_adpType": "supplier",
"x_generator": {
"engine": "sadp-cli 1.0.0"
},
"providerMetadata": {
"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"shortName": "redhat-SADP",
"dateUpdated": "2026-07-15T00:52:21.623Z"
}
}
]
}
}
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