CVE-2026-9516

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-9516", "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "state": "PUBLISHED", "assignerShortName": "CPANSec", "dateReserved": "2026-05-25T18:54:26.396Z", "datePublished": "2026-06-03T00:15:51.685Z", "dateUpdated": "2026-06-03T15:58:49.426Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "packageName": "Cpanel-JSON-XS", "product": "Cpanel::JSON::XS", "programFiles": ["XS.xs"], "programRoutines": [{"name": "decode_json"}], "repo": "https://github.com/rurban/Cpanel-JSON-XS", "vendor": "RURBAN", "versions": [{"lessThan": "4.41", "status": "affected", "version": "0", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Cpanel::JSON::XS versions before 4.41 for Perl allow denial of service via UTF-8 BOM prefixed input when a decode filter callback throws.\n\nTo skip a leading 3-byte UTF-8 BOM, decode_json() advances the input scalar's string pointer past the mark with SvPV_set() and restores it only on the normal return path. When decoding aborts through a Perl exception, for example a filter_json_object callback that croaks, the restore is skipped and the scalar is left with its string pointer offset into its own buffer and a shortened length.\n\nWhen that scalar is later freed, the allocator receives an invalid pointer and the interpreter aborts. A single BOM prefixed document decoded with a throwing filter callback crashes any caller."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-763", "description": "CWE-763 Release of Invalid Pointer or Reference", "lang": "en", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-755", "description": "CWE-755 Improper Handling of Exceptional Conditions", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "shortName": "CPANSec", "dateUpdated": "2026-06-03T00:15:51.685Z"}, "references": [{"tags": ["patch"], "url": "https://github.com/rurban/Cpanel-JSON-XS/commit/dfe1b41a36caba51dc12a2917fe50285d1ffaa7b.patch"}, {"tags": ["release-notes"], "url": "https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.41/changes"}], "solutions": [{"lang": "en", "value": "Upgrade to Cpanel::JSON::XS 4.41 or later."}], "source": {"discovery": "UNKNOWN"}, "timeline": [{"lang": "en", "time": "2026-05-18T00:00:00.000Z", "value": "Issue reported."}, {"lang": "en", "time": "2026-05-27T00:00:00.000Z", "value": "Version 4.41 released with fix."}, {"lang": "en", "time": "2026-05-28T00:00:00.000Z", "value": "Fix verified."}], "title": "Cpanel::JSON::XS versions before 4.41 for Perl allow denial of service via UTF-8 BOM prefixed input when a decode filter callback throws", "x_generator": {"engine": "cpansec-cna-tool 0.1"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/06/03/5"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-06-03T09:35:39.521Z"}}, {"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": "2026-06-03T15:58:42.977647Z", "id": "CVE-2026-9516", "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": "2026-06-03T15:58:49.426Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/06/03/5"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-06-03T09:35:39.521Z"}}, {"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-2026-9516", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-03T15:58:42.977647Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-03T15:58:32.580Z"}}], "cna": {"title": "Cpanel::JSON::XS versions before 4.41 for Perl allow denial of service via UTF-8 BOM prefixed input when a decode filter callback throws", "source": {"discovery": "UNKNOWN"}, "affected": [{"repo": "https://github.com/rurban/Cpanel-JSON-XS", "vendor": "RURBAN", "product": "Cpanel::JSON::XS", "versions": [{"status": "affected", "version": "0", "lessThan": "4.41", "versionType": "custom"}], "packageName": "Cpanel-JSON-XS", "programFiles": ["XS.xs"], "collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "programRoutines": [{"name": "decode_json"}]}], "timeline": [{"lang": "en", "time": "2026-05-18T00:00:00.000Z", "value": "Issue reported."}, {"lang": "en", "time": "2026-05-27T00:00:00.000Z", "value": "Version 4.41 released with fix."}, {"lang": "en", "time": "2026-05-28T00:00:00.000Z", "value": "Fix verified."}], "solutions": [{"lang": "en", "value": "Upgrade to Cpanel::JSON::XS 4.41 or later."}], "references": [{"url": "https://github.com/rurban/Cpanel-JSON-XS/commit/dfe1b41a36caba51dc12a2917fe50285d1ffaa7b.patch", "tags": ["patch"]}, {"url": "https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.41/changes", "tags": ["release-notes"]}], "x_generator": {"engine": "cpansec-cna-tool 0.1"}, "descriptions": [{"lang": "en", "value": "Cpanel::JSON::XS versions before 4.41 for Perl allow denial of service via UTF-8 BOM prefixed input when a decode filter callback throws.\n\nTo skip a leading 3-byte UTF-8 BOM, decode_json() advances the input scalar's string pointer past the mark with SvPV_set() and restores it only on the normal return path. When decoding aborts through a Perl exception, for example a filter_json_object callback that croaks, the restore is skipped and the scalar is left with its string pointer offset into its own buffer and a shortened length.\n\nWhen that scalar is later freed, the allocator receives an invalid pointer and the interpreter aborts. A single BOM prefixed document decoded with a throwing filter callback crashes any caller."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-763", "description": "CWE-763 Release of Invalid Pointer or Reference"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-755", "description": "CWE-755 Improper Handling of Exceptional Conditions"}]}], "providerMetadata": {"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "shortName": "CPANSec", "dateUpdated": "2026-06-03T00:15:51.685Z"}}}, "cveMetadata": {"cveId": "CVE-2026-9516", "state": "PUBLISHED", "dateUpdated": "2026-06-03T15:58:49.426Z", "dateReserved": "2026-05-25T18:54:26.396Z", "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "datePublished": "2026-06-03T00:15:51.685Z", "assignerShortName": "CPANSec"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "packageName": "Cpanel-JSON-XS", "product": "Cpanel::JSON::XS", "programFiles": ["XS.xs"], "programRoutines": [{"name": "decode_json"}], "repo": "https://github.com/rurban/Cpanel-JSON-XS", "vendor": "RURBAN", "versions": [{"lessThan": "4.41", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:rurban:cpanel\\:\\:json\\:\\:xs:*:*:*:*:*:perl:*:*", "matchCriteriaId": "41C09D6F-C2F2-42BF-9734-B6F7D9E02777", "versionEndExcluding": "4.41", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Cpanel::JSON::XS versions before 4.41 for Perl allow denial of service via UTF-8 BOM prefixed input when a decode filter callback throws.\n\nTo skip a leading 3-byte UTF-8 BOM, decode_json() advances the input scalar's string pointer past the mark with SvPV_set() and restores it only on the normal return path. When decoding aborts through a Perl exception, for example a filter_json_object callback that croaks, the restore is skipped and the scalar is left with its string pointer offset into its own buffer and a shortened length.\n\nWhen that scalar is later freed, the allocator receives an invalid pointer and the interpreter aborts. A single BOM prefixed document decoded with a throwing filter callback crashes any caller."}, {"lang": "es", "value": "Las versiones de Cpanel::JSON::XS anteriores a la 4.41 para Perl permiten la denegaci\u00f3n de servicio a trav\u00e9s de una entrada prefijada con BOM UTF-8 cuando una devoluci\u00f3n de llamada de filtro de decodificaci\u00f3n lanza una excepci\u00f3n.\n\nPara omitir un BOM UTF-8 inicial de 3 bytes, decode_json() avanza el puntero de cadena del escalar de entrada m\u00e1s all\u00e1 de la marca con SvPV_set() y lo restaura solo en la ruta de retorno normal. Cuando la decodificaci\u00f3n se aborta a trav\u00e9s de una excepci\u00f3n de Perl, por ejemplo, una devoluci\u00f3n de llamada filter_json_object que falla, la restauraci\u00f3n se omite y el escalar queda con su puntero de cadena desplazado dentro de su propio b\u00fafer y una longitud acortada.\n\nCuando ese escalar se libera posteriormente, el asignador recibe un puntero no v\u00e1lido y el int\u00e9rprete se aborta. Un \u00fanico documento prefijado con BOM decodificado con una devoluci\u00f3n de llamada de filtro que lanza una excepci\u00f3n bloquea a cualquier llamador."}], "id": "CVE-2026-9516", "lastModified": "2026-07-22T19:10:00.120", "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-2026-9516", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-03T15:58:42.977647Z", "version": "2.0.3"}}]}, "published": "2026-06-03T01:16:23.430", "references": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "tags": ["Patch"], "url": "https://github.com/rurban/Cpanel-JSON-XS/commit/dfe1b41a36caba51dc12a2917fe50285d1ffaa7b.patch"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "tags": ["Release Notes"], "url": "https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.41/changes"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2026/06/03/5"}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-755"}, {"lang": "en", "value": "CWE-763"}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,4.41)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Cpanel::JSON::XS", "source": "cna", "vendor": "RURBAN"}, "product": "cpanel::json::xs", "vendor": "rurban"}], "created": "2026-06-03T04:30:05.589619+00:00", "updated": "2026-06-03T19:30:36.180268+00:00", "vendors": ["rurban", "rurban$PRODUCT$cpanel::json::xs"]}