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vuln-cve/data/2026/8xxx/CVE-2026-8376.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-8376",
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"state": "PUBLISHED",
"assignerShortName": "CPANSec",
"dateReserved": "2026-05-12T08:15:41.456Z",
"datePublished": "2026-05-25T23:53:27.812Z",
"dateUpdated": "2026-11-10T12:40:41.094Z"
},
"containers": {
"cna": {
"affected": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"modules": [
"perl"
],
"packageName": "perl",
"packageURL": "pkg:cpan/perl",
"programFiles": [
"regcomp_study.c"
],
"programRoutines": [
{
"name": "Perl_study_chunk"
}
],
"repo": "https://github.com/Perl/perl5",
"versions": [
{
"lessThan": "5.40.5-RC1",
"status": "affected",
"version": "0",
"versionType": "custom"
},
{
"lessThan": "5.42.3-RC1",
"status": "affected",
"version": "5.41.0",
"versionType": "custom"
},
{
"lessThan": "5.43.11",
"status": "affected",
"version": "5.43.0",
"versionType": "custom"
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{
"lang": "en",
"value": "Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.11 have a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds.\n\nPerl_study_chunk in regcomp_study.c checked the size of the joined substring buffer in characters rather than bytes. For a quantified fixed substring with a large minimum count, the byte length mincount * l could overflow SSize_t, producing an undersized SvGROW allocation; the subsequent copy writes past the end of the buffer.\n\nA caller that compiles an attacker-controlled regular expression on a 32-bit perl build triggers a heap buffer overflow at compile time."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-680",
"description": "CWE-680 Integer Overflow to Buffer Overflow",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
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"shortName": "CPANSec",
"dateUpdated": "2026-09-08T21:33:36.127Z"
},
"references": [
{
"tags": [
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"url": "https://github.com/Perl/perl5/commit/5e7f119eb2bb1181be908701f22bf7068e722f1c.patch"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to Perl 5.40.5, 5.42.3 or 5.44.0 or later, or apply the upstream patch."
}
],
"source": {
"discovery": "UNKNOWN"
},
"timeline": [
{
"lang": "en",
"time": "2026-04-24T00:00:00.000Z",
"value": "Issue reported."
},
{
"lang": "en",
"time": "2026-05-20T00:00:00.000Z",
"value": "Fix merged to blead."
}
],
"title": "Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.11 have a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds",
"workarounds": [
{
"lang": "en",
"value": "On 32-bit perl builds, avoid compiling regular expressions from untrusted input until a fixed release is installed."
}
],
"x_generator": {
"engine": "cpansec-cna-tool 0.1"
}
},
"adp": [
{
"title": "CVE Program Container",
"references": [
{
"url": "http://www.openwall.com/lists/oss-security/2026/05/26/1"
}
],
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2026-05-26T03:06:00.816Z"
}
},
{
"metrics": [
{
"cvssV3_1": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.3,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"integrityImpact": "LOW",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "LOW",
"privilegesRequired": "NONE",
"confidentialityImpact": "LOW"
}
},
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-05-27T18:03:45.554441Z",
"id": "CVE-2026-8376",
"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": "2026-05-27T18:04:00.329Z"
}
},
{
"x_adpType": "supplier",
"providerMetadata": {
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP",
"dateUpdated": "2026-11-10T12:40:41.094Z"
},
"affected": [
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)",
"versions": [
{
"status": "affected",
"version": "V3.1.7",
"lessThan": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)",
"versions": [
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"lessThan": "*",
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],
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{
"vendor": "Siemens",
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"lessThan": "*",
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],
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{
"vendor": "Siemens",
"product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)",
"versions": [
{
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"lessThan": "*",
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],
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],
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"
}
]
}
]
}
}