CVE-2026-116268

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-116268", "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "state": "PUBLISHED", "assignerShortName": "CPANSec", "dateReserved": "2026-10-25T18:05:02.236Z", "datePublished": "2026-10-28T17:33:04.336Z", "dateUpdated": "2026-11-05T20:30:45.017Z"}, "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 allow CPU exhaustion via unclosed comments in header parameters.\n\nThe comment pattern used to parse Content-Type and Content-Disposition parameters scans from each \"(\" to the next \")\". In a field with no \")\", every \"(\" scans to the end of the header and fails, so parsing takes time quadratic in the header length. The field is parsed again on each attribute lookup, several times per MIME entity.\n\nA 40 KB header takes about 7 seconds to parse once."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-1333", "description": "CWE-1333 Inefficient Regular Expression Complexity", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "shortName": "CPANSec", "dateUpdated": "2026-10-28T17:33:04.336Z"}, "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 allow CPU exhaustion via unclosed comments in header parameters", "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": "2026-11-05T20:29:37.240856Z", "id": "CVE-2026-116268", "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": "2026-11-05T20:30:45.017Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "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": {"id": "CVE-2026-116268", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-05T20:29:37.240856Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-05T20:29:56.965Z"}}], "cna": {"title": "MIME::Field::ParamVal versions before 5.521 for Perl allow CPU exhaustion via unclosed comments in header parameters", "source": {"discovery": "UNKNOWN"}, "affected": [{"repo": "https://salsa.debian.org/dskoll/mime-tools", "modules": ["MIME::Field::ParamVal"], "versions": [{"status": "affected", "version": "0", "lessThan": "5.521", "versionType": "custom"}], "packageURL": "pkg:cpan/MIME-tools", "packageName": "MIME-tools", "programFiles": ["lib/MIME/Field/ParamVal.pm"], "collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "programRoutines": [{"name": "MIME::Field::ParamVal::parse_params"}]}], "solutions": [{"lang": "en", "value": "Upgrade to MIME-tools 5.521 or later."}], "references": [{"url": "https://metacpan.org/release/DSKOLL/MIME-tools-5.521/changes", "tags": ["release-notes"]}], "x_generator": {"engine": "cpansec-cna-tool 0.1"}, "descriptions": [{"lang": "en", "value": "MIME::Field::ParamVal versions before 5.521 for Perl allow CPU exhaustion via unclosed comments in header parameters.\n\nThe comment pattern used to parse Content-Type and Content-Disposition parameters scans from each \"(\" to the next \")\". In a field with no \")\", every \"(\" scans to the end of the header and fails, so parsing takes time quadratic in the header length. The field is parsed again on each attribute lookup, several times per MIME entity.\n\nA 40 KB header takes about 7 seconds to parse once."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-1333", "description": "CWE-1333 Inefficient Regular Expression Complexity"}]}], "providerMetadata": {"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "shortName": "CPANSec", "dateUpdated": "2026-10-28T17:33:04.336Z"}}}, "cveMetadata": {"cveId": "CVE-2026-116268", "state": "PUBLISHED", "dateUpdated": "2026-11-05T20:30:45.017Z", "dateReserved": "2026-10-25T18:05:02.236Z", "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "datePublished": "2026-10-28T17:33:04.336Z", "assignerShortName": "CPANSec"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"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"}]}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "MIME::Field::ParamVal versions before 5.521 for Perl allow CPU exhaustion via unclosed comments in header parameters.\n\nThe comment pattern used to parse Content-Type and Content-Disposition parameters scans from each \"(\" to the next \")\". In a field with no \")\", every \"(\" scans to the end of the header and fails, so parsing takes time quadratic in the header length. The field is parsed again on each attribute lookup, several times per MIME entity.\n\nA 40 KB header takes about 7 seconds to parse once."}], "id": "CVE-2026-116268", "lastModified": "2026-11-05T21:18:38.340", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-116268", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-05T20:29:37.240856Z", "version": "2.0.3"}}]}, "published": "2026-10-28T18:17:13.250", "references": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://metacpan.org/release/DSKOLL/MIME-tools-5.521/changes"}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1333"}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "type": "Secondary"}]}

{"bugzilla": {"description": "perl-MIME-tools: perl-MIME-tools: Denial of Service via unclosed comments in header parameters", "id": "2563045", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2563045"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-1333", "details": ["MIME::Field::ParamVal versions before 5.521 for Perl allow CPU exhaustion via unclosed comments in header parameters.\nThe comment pattern used to parse Content-Type and Content-Disposition parameters scans from each \"(\" to the next \")\". In a field with no \")\", every \"(\" scans to the end of the header and fails, so parsing takes time quadratic in the header length. The field is parsed again on each attribute lookup, several times per MIME entity.\nA 40 KB header takes about 7 seconds to parse once.", "A flaw was found in perl-MIME-tools. A remote attacker can cause a Denial of Service (DoS) by supplying specially crafted Multipurpose Internet Mail Extensions (MIME) headers containing unclosed comments. Due to inefficient parsing of parameters lacking closing parentheses, the parser repeatedly scans the remainder of the header, leading to excessive CPU consumption and application unresponsiveness."], "name": "CVE-2026-116268", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "perl-MIME-tools", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2026-10-28T17:33:04Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-116268\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-116268\nhttps://metacpan.org/release/DSKOLL/MIME-tools-5.521/changes"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,5.521)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "product": "mime::field::paramval", "vendor": "perl"}], "created": "2026-10-28T19:00:23.214970+00:00", "updated": "2026-11-05T22:30:17.935808+00:00", "vendors": ["perl", "perl$PRODUCT$mime::field::paramval"]}