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vuln-cve/data/2026/96xxx/CVE-2026-96643.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-96643",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-09-23T14:35:50.130Z",
"datePublished": "2026-10-21T20:56:26.344Z",
"dateUpdated": "2026-10-23T21:19:12.901Z"
},
"containers": {
"cna": {
"title": "Pillow: PNG eXIf chunk makes EXIF parsing run in quadratic time",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-407",
"lang": "en",
"description": "CWE-407: Inefficient Algorithmic Complexity",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "PASSIVE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/python-pillow/Pillow/security/advisories/GHSA-g4qv-2jxx-769h",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/python-pillow/Pillow/security/advisories/GHSA-g4qv-2jxx-769h"
},
{
"name": "https://github.com/python-pillow/Pillow/pull/10073",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/python-pillow/Pillow/pull/10073"
},
{
"name": "https://github.com/python-pillow/Pillow/commit/806e38381c781f32bbd22f4cd026678acd40fd6c",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/python-pillow/Pillow/commit/806e38381c781f32bbd22f4cd026678acd40fd6c"
},
{
"name": "https://github.com/python-pillow/Pillow/releases/tag/13.0.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/python-pillow/Pillow/releases/tag/13.0.0"
}
],
"affected": [
{
"vendor": "python-pillow",
"product": "Pillow",
"versions": [
{
"version": ">= 11.0.0, < 13.0.0",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-10-21T20:56:26.344Z"
},
"descriptions": [
{
"lang": "en",
"value": "Pillow is a Python imaging library. From 11.0.0 until 13.0.0, Exif.load() in src/PIL/Image.py repeatedly slices the remaining EXIF data while it begins with the six-byte Exif header. src/PIL/PngImagePlugin.py accepts an uncapped PNG eXIf chunk, so a file filled with repeated headers causes a new shrinking copy on every iteration and quadratic CPU work. The condition is reachable through Image.getexif(), Image._getexif(), and ImageOps.exif_transpose(), including common photo-upload rotation workflows. This issue is fixed in version 13.0.0."
}
],
"source": {
"advisory": "GHSA-g4qv-2jxx-769h",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-10-23T17:32:48.986807Z",
"id": "CVE-2026-96643",
"options": [
{
"Exploitation": "none"
},
{
"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": "2026-10-23T21:19:12.901Z"
}
}
]
}
}