CVE-2026-116133

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{"affected": [{"affectedData": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "modules": ["HTTP::Body"], "packageName": "HTTP-Body", "packageURL": "pkg:cpan/HTTP-Body", "programFiles": ["lib/HTTP/Body/MultiPart.pm"], "programRoutines": [{"name": "HTTP::Body::MultiPart::parse_preamble"}, {"name": "HTTP::Body::MultiPart::parse_boundary"}], "repo": "https://github.com/libwww-perl/HTTP-Body", "versions": [{"lessThan": "1.23_01", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic rescanning of a multipart body with a missing or malformed boundary.\n\nBefore the first part, and between parts, the multipart parser searches the whole buffered body for the next boundary. On a miss it keeps everything and searches again from the start when the next chunk arrives. A body with no boundary, or with a delimiter followed by neither CRLF nor \"--\", is therefore rescanned on every chunk, taking time quadratic in its size.\n\nA remote attacker can exhaust worker CPU with a few such requests."}], "id": "CVE-2026-116133", "lastModified": "2026-11-05T20:17:43.660", "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-2026-116133", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-05T20:06:32.694569Z", "version": "2.0.3"}}]}, "published": "2026-10-28T18:17:12.460", "references": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://github.com/libwww-perl/HTTP-Body/commit/bf77eb959bbe1641b77f69eefe98d58ce4c4ec79.patch"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://metacpan.org/release/GETTY/HTTP-Body-1.24/changes"}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-407"}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "type": "Secondary"}]}

{"bugzilla": {"description": "perl-http-body: HTTP::Body: Denial of Service via malformed multipart request body", "id": "2563026", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2563026"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-770", "details": ["HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic rescanning of a multipart body with a missing or malformed boundary.\nBefore the first part, and between parts, the multipart parser searches the whole buffered body for the next boundary. On a miss it keeps everything and searches again from the start when the next chunk arrives. A body with no boundary, or with a delimiter followed by neither CRLF nor \"--\", is therefore rescanned on every chunk, taking time quadratic in its size.\nA remote attacker can exhaust worker CPU with a few such requests.", "A flaw was found in HTTP::Body. A remote attacker can cause a Denial of Service (DoS) by sending specially crafted HTTP requests containing missing or malformed multipart boundaries. Due to inefficient parsing, the component repeatedly rescans the buffered message body upon receiving each data chunk, consuming excessive CPU resources and exhausting server worker processes."], "name": "CVE-2026-116133", "public_date": "2026-10-28T17:15:16Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-116133\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-116133\nhttps://github.com/libwww-perl/HTTP-Body/commit/bf77eb959bbe1641b77f69eefe98d58ce4c4ec79.patch\nhttps://metacpan.org/release/GETTY/HTTP-Body-1.24/changes"], "statement": "This flaw is rated with an Important severity impact because an unauthenticated remote attacker can exhaust server compute resources with low-complexity network requests, rendering backend services unavailable. In Red Hat environments, perl-HTTP-Body is not distributed as part of core Red Hat Enterprise Linux and is only packaged through EPEL and Fedora community repositories. Web services utilizing this library to parse incoming multipart HTTP form submissions from untrusted clients face potential denial of service due to worker thread saturation.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,1.23_01)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "product": "http-body", "vendor": "libwww-perl"}], "created": "2026-10-28T19:00:23.217383+00:00", "updated": "2026-10-31T01:30:11.558382+00:00", "vendors": ["libwww-perl", "libwww-perl$PRODUCT$http-body"]}