{"id":"CVE-2026-110687","aliases":[],"cve":{"records":[{"id":"CVE-2026-110687","source":"CPANSec","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-14T13:27:15.271Z","published":"2026-10-19T18:12:22.028Z","modified":"2026-10-29T17:15:37.701Z"}],"publishers":[{"name":"CPANSec","role":"CNA","organizationId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","modified":"2026-10-19T18:12:22.028Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-29T17:15:37.701Z"}],"references":[{"url":"https://github.com/rurban/Cpanel-JSON-XS/commit/bb9da30b67f637f4d57922f0e043376363f28f0c.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-176","description":"CWE-176 Improper Handling of Unicode Encoding","source":"CPANSec"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-29T17:15:03.635936Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"yes"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Cpanel::JSON::XS versions from 4.43 before 4.80 for Perl misorder byte-string keys during canonical encoding in utf16_cmp","titleSource":"CPANSec","descriptionSource":"CPANSec","description":"Cpanel::JSON::XS versions from 4.43 before 4.80 for Perl misorder byte-string keys during canonical encoding in utf16_cmp.\n\ncanonical sorts keys by UTF-16 code units. When any key in a hash is UTF-8 flagged, every key is decoded as UTF-8 for the comparison, including byte-string keys that the encoder writes out as Latin-1 characters. A byte-string key whose bytes are valid UTF-8 is sorted out of order, and two keys that encode differently can compare equal and are left in hash order.\n\nThe same data can encode to different canonical documents across processes.","score":7.5,"severity":"high","published":"2026-10-19T18:12:22.028Z","modified":"2026-10-29T17:15:37.701Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"","name":"Cpanel-JSON-XS","platforms":[],"versions":[{"version":"4.43","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-2026-110687"}],"remediation":[{"text":"Upgrade to Cpanel-JSON-XS 4.80 or later.","source":"CPANSec","url":"https://www.cve.org/CVERecord?id=CVE-2026-110687"}],"references":["https://github.com/rurban/Cpanel-JSON-XS/commit/bb9da30b67f637f4d57922f0e043376363f28f0c.patch","https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/changes"],"sources":[{"name":"CVE","id":"CVE-2026-110687","modified":"2026-10-29T17:15:37.701Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-110687"}],"assessments":[{"source":"CISA-ADP","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5}],"sourceAffected":[],"observedAt":"2026-10-29T17:51:28.874Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T13:55:32.867Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-30T09:20:33.369Z","attemptedAt":"2026-10-30T09:20:33.369Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-30T09:20:33.028Z","attemptedAt":"2026-10-30T09:20:33.028Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-30T09:20:32.453Z","attemptedAt":"2026-10-30T09:20:32.453Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-30T09:20:32.791Z","attemptedAt":"2026-10-30T09:20:32.791Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-104566","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-104566","modified":"Oct 29, 2026, 5:15:37 PM","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","checkedAt":"2026-10-30T09:20:32.453Z"},{"source":"FIRST EPSS","id":"CVE-2026-110687","url":"https://www.first.org/epss/","probability":0.00171,"percentile":0.06511,"date":"2026-10-29","checkedAt":"2026-10-30T09:20:32.791Z"},{"source":"GitHub Advisory Database","id":"GHSA-fq4p-2pcg-jg87","url":"https://github.com/advisories/GHSA-fq4p-2pcg-jg87","modified":"2026-10-29T18:31:41Z","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","checkedAt":"2026-10-30T09:20:33.028Z"},{"source":"NVD","id":"CVE-2026-110687","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110687","modified":"2026-10-29T18:17:22.573","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","checkedAt":"2026-10-30T09:20:33.369Z"}],"aiSummary":{"text":"Cpanel::JSON::XS versions 4.43 before 4.80 for Perl misorder byte-string keys during canonical encoding. This weakness may cause the same data to encode to different canonical documents across processes. Local access is required to exploit this weakness.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:55:51.437Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-110687"}]}}