{"id":"CVE-2026-110676","aliases":[],"cve":{"records":[{"id":"CVE-2026-110676","source":"CPANSec","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-14T13:23:56.248Z","published":"2026-10-19T18:11:45.805Z","modified":"2026-10-29T16:41:41.919Z"}],"publishers":[{"name":"CPANSec","role":"CNA","organizationId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","modified":"2026-10-19T18:11:45.805Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-29T16:41:41.919Z"}],"references":[{"url":"https://github.com/rurban/Cpanel-JSON-XS/commit/996ab96972b967a917536d291947b5f3cf42e960.patch","tags":["patch"],"source":"CPANSec"},{"url":"https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/changes","tags":["release-notes"],"source":"CPANSec"}],"weaknesses":[{"id":"CWE-405","description":"CWE-405 Asymmetric Resource Consumption (Amplification)","source":"CPANSec"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-29T16:41:22.938408Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"yes"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Cpanel::JSON::XS versions before 4.80 for Perl allow memory exhaustion by encoding exponent notation as full decimal digits under allow_bignum","titleSource":"CPANSec","descriptionSource":"CPANSec","description":"Cpanel::JSON::XS versions before 4.80 for Perl allow memory exhaustion by encoding exponent notation as full decimal digits under allow_bignum.\n\nWith allow_bignum, a JSON number with a fraction or exponent decodes to a Math::BigFloat, which stores the exponent separately and so decodes cheaply. Encoding it untyped or as JSON_TYPE_FLOAT writes the plain decimal form with one digit per unit of exponent. Nothing bounds the exponent, so the 12-byte text [1e30000000] encodes to 30 MB.\n\nUntrusted JSON decoded with allow_bignum and encoded again can exhaust memory and CPU.","score":7.5,"severity":"high","published":"2026-10-19T18:11:45.805Z","modified":"2026-10-29T16:41:41.919Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"","name":"Cpanel-JSON-XS","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"4.80","versionType":"custom"}],"defaultStatus":"unaffected","packageURL":"pkg:cpan/Cpanel-JSON-XS","cpes":[],"source":"CPANSec","url":"https://www.cve.org/CVERecord?id=CVE-2026-110676"}],"remediation":[{"text":"Upgrade to Cpanel-JSON-XS 4.80 or later.","source":"CPANSec","url":"https://www.cve.org/CVERecord?id=CVE-2026-110676"}],"references":["https://github.com/rurban/Cpanel-JSON-XS/commit/996ab96972b967a917536d291947b5f3cf42e960.patch","https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/changes"],"sources":[{"name":"CVE","id":"CVE-2026-110676","modified":"2026-10-29T16:41:41.919Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-110676"}],"assessments":[{"source":"CISA-ADP","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5}],"sourceAffected":[],"observedAt":"2026-10-29T17:12:48.504Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T14:10:32.801Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-30T10:25:35.664Z","attemptedAt":"2026-10-30T10:25:35.664Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-30T10:25:35.554Z","attemptedAt":"2026-10-30T10:25:35.554Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-30T10:25:38.602Z","attemptedAt":"2026-10-30T10:25:38.602Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-30T10:25:35.502Z","attemptedAt":"2026-10-30T10:25:35.502Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2026-110676","url":"https://www.first.org/epss/","probability":0.00171,"percentile":0.06511,"date":"2026-10-29","checkedAt":"2026-10-30T10:25:35.502Z"},{"source":"GitHub Advisory Database","id":"GHSA-qgf5-7gf3-jg2g","url":"https://github.com/advisories/GHSA-qgf5-7gf3-jg2g","modified":"2026-10-29T18:31:41Z","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","checkedAt":"2026-10-30T10:25:35.554Z"},{"source":"NVD","id":"CVE-2026-110676","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110676","modified":"2026-10-29T17:17:59.987","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","checkedAt":"2026-10-30T10:25:35.664Z"},{"source":"ENISA EUVD","id":"EUVD-2026-104557","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-104557","modified":"Oct 29, 2026, 4:41:41 PM","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","checkedAt":"2026-10-30T10:25:38.602Z"}],"aiSummary":{"text":"Cpanel::JSON::XS versions before 4.80 for Perl may allow memory exhaustion via untrusted JSON decoding with allow_bignum and encoding. The weakness is asymmetric resource consumption. Untrusted input is required to exploit this vulnerability.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:57:35.912Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-110676"}]}}