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vuln-cve/data/2026/116xxx/CVE-2026-116265.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-116265",
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"state": "PUBLISHED",
"assignerShortName": "CPANSec",
"dateReserved": "2026-10-25T18:05:02.235Z",
"datePublished": "2026-10-28T17:32:11.827Z",
"dateUpdated": "2026-11-05T20:18:56.340Z"
},
"containers": {
"cna": {
"affected": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"modules": [
"MIME::Field::ParamVal"
],
"packageName": "MIME-tools",
"packageURL": "pkg:cpan/MIME-tools",
"programFiles": [
"lib/MIME/Field/ParamVal.pm"
],
"programRoutines": [
{
"name": "MIME::Field::ParamVal::parse_params"
}
],
"repo": "https://salsa.debian.org/dskoll/mime-tools",
"versions": [
{
"lessThan": "5.521",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "MIME::Field::ParamVal versions before 5.521 for Perl do not flag an ambiguous multipart boundary written as RFC 2231 continuations.\n\nThe boundary ambiguity checks look only at a plain boundary= parameter, and a boundary split into RFC 2231 sections (boundary*0=, boundary*1= and so on) is joined after they have run. A repeated section number is concatenated rather than reported as a duplicate. From version 5.518, an encoded word or trailing whitespace in such a boundary also goes unflagged, although multipart_boundary() decodes or strips it.\n\nA remote sender can make MIME::Parser split a message on a different boundary than other mail readers, hiding an attachment from a filter that relies on ambiguous_content() while the recipient's mail client shows it."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-436",
"description": "CWE-436 Interpretation Conflict",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"shortName": "CPANSec",
"dateUpdated": "2026-10-28T17:32:11.827Z"
},
"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::Field::ParamVal versions before 5.521 for Perl do not flag an ambiguous multipart boundary written as RFC 2231 continuations",
"x_generator": {
"engine": "cpansec-cna-tool 0.1"
}
},
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.3,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
}
},
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-11-05T20:18:44.830594Z",
"id": "CVE-2026-116265",
"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": "2026-11-05T20:18:56.340Z"
}
}
]
}
}