{"api_version":"1","generated_at":"2026-11-14T23:50:25+00:00","cve":"CVE-2026-129113","urls":{"html":"https://cve.report/CVE-2026-129113","api":"https://cve.report/api/cve/CVE-2026-129113.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-129113","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-129113"},"summary":{"title":"JSON::XS versions from 4.0_00 before 4.05 for Perl corrupt the incremental buffer length by chopping past its end in incr_skip after a top-level number","description":"JSON::XS versions from 4.0_00 before 4.05 for Perl corrupt the incremental buffer length by chopping past its end in incr_skip after a top-level number.\n\nThe incremental parser scans any run of digits, signs, dots and exponent markers as one number, but the decoder stops at the end of a valid number, so the parser keeps an offset into bytes it has not decoded. It then empties the buffer without clearing those bytes, and a later incr_parse call without new input reads them again and moves the offset past the end of the buffer. incr_skip, the documented recovery after an error, removes that many bytes and the buffer length wraps.\n\nA peer sending input such as \"1-2\" to an incr_parse consumer can make the next read of incr_text exit the process through perl's uncatchable out-of-memory path.","state":"PUBLISHED","assigner":"CPANSec","published_at":"2026-11-14 12:17:43","updated_at":"2026-11-14 12:17:43"},"problem_types":["CWE-191","CWE-191 CWE-191 Integer Underflow (Wrap or Wraparound)"],"metrics":[],"references":[{"url":"https://metacpan.org/release/MLEHMANN/JSON-XS-4.05/changes","name":"https://metacpan.org/release/MLEHMANN/JSON-XS-4.05/changes","refsource":"9b29abf9-4ab0-4765-b253-1875cd9b441e","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-129113","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-129113","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[{"source":"CNA","time":"2026-11-13T00:00:00.000Z","lang":"en","value":"Version 4.05 released with fix."}],"solutions":[{"source":"CNA","title":"","value":"Upgrade to JSON-XS 4.05 or later.","time":"","lang":"en"}],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Albert Gierlach (rivit)","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","modules":["JSON::XS"],"packageName":"JSON-XS","packageURL":"pkg:cpan/JSON-XS","programFiles":["XS.xs"],"programRoutines":[{"name":"JSON::XS::incr_parse"},{"name":"JSON::XS::incr_skip"}],"repo":"https://cvs.schmorp.de/JSON-XS/","versions":[{"lessThan":"4.05","status":"affected","version":"4.0_00","versionType":"custom"}]}],"credits":[{"lang":"en","type":"reporter","value":"Albert Gierlach (rivit)"}],"descriptions":[{"lang":"en","value":"JSON::XS versions from 4.0_00 before 4.05 for Perl corrupt the incremental buffer length by chopping past its end in incr_skip after a top-level number.\n\nThe incremental parser scans any run of digits, signs, dots and exponent markers as one number, but the decoder stops at the end of a valid number, so the parser keeps an offset into bytes it has not decoded. It then empties the buffer without clearing those bytes, and a later incr_parse call without new input reads them again and moves the offset past the end of the buffer. incr_skip, the documented recovery after an error, removes that many bytes and the buffer length wraps.\n\nA peer sending input such as \"1-2\" to an incr_parse consumer can make the next read of incr_text exit the process through perl's uncatchable out-of-memory path."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-191","description":"CWE-191 Integer Underflow (Wrap or Wraparound)","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-11-14T11:53:37.474Z","orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","shortName":"CPANSec"},"references":[{"tags":["release-notes"],"url":"https://metacpan.org/release/MLEHMANN/JSON-XS-4.05/changes"}],"solutions":[{"lang":"en","value":"Upgrade to JSON-XS 4.05 or later."}],"source":{"discovery":"UNKNOWN"},"timeline":[{"lang":"en","time":"2026-11-13T00:00:00.000Z","value":"Version 4.05 released with fix."}],"title":"JSON::XS versions from 4.0_00 before 4.05 for Perl corrupt the incremental buffer length by chopping past its end in incr_skip after a top-level number","x_generator":{"engine":"cpansec-cna-tool 0.1"}}},"cveMetadata":{"assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","assignerShortName":"CPANSec","cveId":"CVE-2026-129113","datePublished":"2026-11-14T11:53:37.474Z","dateReserved":"2026-11-13T15:54:17.575Z","dateUpdated":"2026-11-14T11:53:37.474Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-11-14 12:17:43","lastModifiedDate":"2026-11-14 12:17:43","problem_types":["CWE-191","CWE-191 CWE-191 Integer Underflow (Wrap or Wraparound)"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"129113","Ordinal":"1","Title":"JSON::XS versions from 4.0_00 before 4.05 for Perl corrupt the i","CVE":"CVE-2026-129113","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"129113","Ordinal":"1","NoteData":"JSON::XS versions from 4.0_00 before 4.05 for Perl corrupt the incremental buffer length by chopping past its end in incr_skip after a top-level number.\n\nThe incremental parser scans any run of digits, signs, dots and exponent markers as one number, but the decoder stops at the end of a valid number, so the parser keeps an offset into bytes it has not decoded. It then empties the buffer without clearing those bytes, and a later incr_parse call without new input reads them again and moves the offset past the end of the buffer. incr_skip, the documented recovery after an error, removes that many bytes and the buffer length wraps.\n\nA peer sending input such as \"1-2\" to an incr_parse consumer can make the next read of incr_text exit the process through perl's uncatchable out-of-memory path.","Type":"Description","Title":"JSON::XS versions from 4.0_00 before 4.05 for Perl corrupt the i"}]}}}