{"id":"CVE-2026-16634","state":"PUBLISHED","title":"TOML::XS versions before 0.06 for Perl bundle an unsupported and vulnerable version of tomlc99","description":"TOML::XS versions before 0.06 for Perl bundle an unsupported and vulnerable version of tomlc99.\n\nThe tomlc99 library is no longer maintained, and has an uncontrolled recursion vulnerability publicly reported in the issue tracker.\n\nAny caller that passes untrusted TOML to from_toml risks a stack overflow from a deeply-nested document.\n\nTOML::XS version 0.06 or later uses the successor tomlc17 library.","publishedAt":"2026-07-24T09:14:58.986Z","updatedAt":"2026-07-27T17:15:54.188Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"CPANSec","products":["FELIPE TOML::XS"],"affected":[{"vendor":"FELIPE","product":"TOML::XS","packageName":"TOML-XS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.06","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","repo":"https://github.com/FGasper/p5-TOML-XS"}],"references":["https://metacpan.org/release/FELIPE/TOML-XS-0.06/changes","https://raw.githubusercontent.com/cktan/tomlc99/29076dfd095bbbbd50a3c1b2760d29f4b83e74ac/README.md","https://github.com/cktan/tomlc99/issues/97","https://github.com/cktan/tomlc17","https://toml.io/en/v1.0.0","http://www.openwall.com/lists/oss-security/2026/07/24/4"],"weaknesses":["CWE-1104","CWE-1395"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/16xxx/CVE-2026-16634.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-16634","state":"PUBLISHED","datePublished":"2026-07-24T09:14:58.986Z","dateUpdated":"2026-07-27T17:15:54.188Z","assignerShortName":"CPANSec","assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateReserved":"2026-07-22T16:37:55.533Z"},"containers":{"cna":{"title":"TOML::XS versions before 0.06 for Perl bundle an unsupported and vulnerable version of tomlc99","descriptions":[{"lang":"en","value":"TOML::XS versions before 0.06 for Perl bundle an unsupported and vulnerable version of tomlc99.\n\nThe tomlc99 library is no longer maintained, and has an uncontrolled recursion vulnerability publicly reported in the issue tracker.\n\nAny caller that passes untrusted TOML to from_toml risks a stack overflow from a deeply-nested document.\n\nTOML::XS version 0.06 or later uses the successor tomlc17 library."}],"affected":[{"vendor":"FELIPE","product":"TOML::XS","packageName":"TOML-XS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.06","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","repo":"https://github.com/FGasper/p5-TOML-XS"}],"references":[{"url":"https://metacpan.org/release/FELIPE/TOML-XS-0.06/changes","tags":["release-notes"]},{"url":"https://raw.githubusercontent.com/cktan/tomlc99/29076dfd095bbbbd50a3c1b2760d29f4b83e74ac/README.md"},{"url":"https://github.com/cktan/tomlc99/issues/97","tags":["issue-tracking"]},{"url":"https://github.com/cktan/tomlc17"},{"url":"https://toml.io/en/v1.0.0","tags":["technical-description"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1104","description":"CWE-1104 Use of Unmaintained Third Party Components","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-1395","description":"CWE-1395 Dependency on Vulnerable Third-Party Component","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"CPANSec","orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateUpdated":"2026-07-24T09:14:58.986Z"},"solutions":[{"lang":"en","value":"Upgrade to TOML::XS version 0.06 or later."}],"source":{"discovery":"UNKNOWN"},"timeline":[{"lang":"en","time":"2021-08-12T00:00:00.000Z","value":"Version 0.05 released."},{"lang":"en","time":"2025-05-02T00:00:00.000Z","value":"The README for tomlc99 was updated to say that it was obsolete."},{"lang":"en","time":"2026-03-07T00:00:00.000Z","value":"Vulnerability posted to tomlc99 issue tracker."},{"lang":"en","time":"2026-07-24T00:00:00.000Z","value":"Version 0.06 released."}],"workarounds":[{"lang":"en","value":"Only parse trusted TOML files."}],"x_generator":{"engine":"cpansec-cna-tool 0.1"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/07/24/4"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-07-24T13:32:08.478Z"}},{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/cktan/tomlc99/issues/97","tags":["exploit"]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.8,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-07-27T17:15:36.719810Z","id":"CVE-2026-16634","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-27T17:15:54.188Z"}}]}}}