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vuln-cve/data/2026/116xxx/CVE-2026-116270.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-116270",
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"state": "PUBLISHED",
"assignerShortName": "CPANSec",
"dateReserved": "2026-10-25T18:05:02.236Z",
"datePublished": "2026-10-28T17:33:48.187Z",
"dateUpdated": "2026-11-05T20:33:17.266Z"
},
"containers": {
"cna": {
"affected": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"modules": [
"MIME::Words"
],
"packageName": "MIME-tools",
"packageURL": "pkg:cpan/MIME-tools",
"programFiles": [
"lib/MIME/Words.pm",
"lib/MIME/Head.pm"
],
"programRoutines": [
{
"name": "MIME::Words::decode_mimewords"
},
{
"name": "MIME::Head::multipart_boundary"
}
],
"repo": "https://salsa.debian.org/dskoll/mime-tools",
"versions": [
{
"lessThan": "5.521",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "MIME::Words versions before 5.521 for Perl allow memory exhaustion via repeated \"=?\" sequences in decode_mimewords.\n\nFor each \"=?\" that does not start a complete encoded word, decode_mimewords appends an error message containing the whole input string to $@. A boundary of 8,000 \"=?\" pairs (16,000 bytes) adds 8,000 copies of itself to $@, about 128 MB.\n\nFrom version 5.518, MIME::Parser decodes every multipart boundary this way, so a remote sender can exhaust the memory of the parsing process with one Content-Type header."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-407",
"description": "CWE-407 Inefficient Algorithmic Complexity",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"shortName": "CPANSec",
"dateUpdated": "2026-10-28T17:33:48.187Z"
},
"references": [
{
"tags": [
"release-notes"
],
"url": "https://metacpan.org/release/DSKOLL/MIME-tools-5.521/changes"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to MIME-tools 5.521 or later."
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "MIME::Words versions before 5.521 for Perl allow memory exhaustion via repeated \"=?\" sequences in decode_mimewords",
"x_generator": {
"engine": "cpansec-cna-tool 0.1"
}
},
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.5,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
}
},
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-11-05T20:33:10.273617Z",
"id": "CVE-2026-116270",
"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": "2026-11-05T20:33:17.266Z"
}
}
]
}
}