{"api_version":"1","generated_at":"2026-10-21T16:09:13+00:00","cve":"CVE-2026-85783","urls":{"html":"https://cve.report/CVE-2026-85783","api":"https://cve.report/api/cve/CVE-2026-85783.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-85783","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-85783"},"summary":{"title":"Crypt::Age versions before 0.004 for Perl allow CPU exhaustion via an unbounded number of recipient stanzas, each costing an X25519 scalar multiplication in unwrap_file_key","description":"Crypt::Age versions before 0.004 for Perl allow CPU exhaustion via an unbounded number of recipient stanzas, each costing an X25519 scalar multiplication in unwrap_file_key.\n\nThe header parser accepts any number of recipient stanzas, and unwrap_file_key tries every identity against every X25519 stanza. Each attempt runs a scalar multiplication, an HKDF and a ChaCha20-Poly1305 open. The header MAC cannot be checked first, because its key comes from the file key, which only a successful unwrap produces.\n\nEach stanza is 98 bytes of attacker-chosen header and buys one scalar multiplication per identity held, and the file is rejected only after every one of them has run. A caller reaches this through decrypt, decrypt_file or decrypt_filehandle whenever it decrypts a file it did not write.","state":"PUBLISHED","assigner":"CPANSec","published_at":"2026-10-20 22:20:05","updated_at":"2026-10-21 01:17:39"},"problem_types":["CWE-405","CWE-770","CWE-770 CWE-770 Allocation of Resources Without Limits or Throttling","CWE-405 CWE-405 Asymmetric Resource Consumption (Amplification)"],"metrics":[],"references":[{"url":"http://www.openwall.com/lists/oss-security/2026/10/20/39","name":"http://www.openwall.com/lists/oss-security/2026/10/20/39","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://metacpan.org/release/GETTY/Crypt-Age-0.004/changes","name":"https://metacpan.org/release/GETTY/Crypt-Age-0.004/changes","refsource":"9b29abf9-4ab0-4765-b253-1875cd9b441e","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-85783","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85783","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[{"source":"CNA","title":"","value":"Upgrade to Crypt-Age 0.004 or later.","time":"","lang":"en"}],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2026-10-21T00:17:19.299Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"url":"http://www.openwall.com/lists/oss-security/2026/10/20/39"}],"title":"CVE Program Container"}],"cna":{"affected":[{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","modules":["Crypt::Age"],"packageName":"Crypt-Age","packageURL":"pkg:cpan/Crypt-Age","programFiles":["lib/Crypt/Age/Header.pm"],"programRoutines":[{"name":"Crypt::Age::Header::parse_from_fh"},{"name":"Crypt::Age::Header::unwrap_file_key"}],"repo":"https://github.com/Getty/p5-crypt-age","versions":[{"lessThan":"0.004","status":"affected","version":"0","versionType":"custom"}]}],"descriptions":[{"lang":"en","value":"Crypt::Age versions before 0.004 for Perl allow CPU exhaustion via an unbounded number of recipient stanzas, each costing an X25519 scalar multiplication in unwrap_file_key.\n\nThe header parser accepts any number of recipient stanzas, and unwrap_file_key tries every identity against every X25519 stanza. Each attempt runs a scalar multiplication, an HKDF and a ChaCha20-Poly1305 open. The header MAC cannot be checked first, because its key comes from the file key, which only a successful unwrap produces.\n\nEach stanza is 98 bytes of attacker-chosen header and buys one scalar multiplication per identity held, and the file is rejected only after every one of them has run. A caller reaches this through decrypt, decrypt_file or decrypt_filehandle whenever it decrypts a file it did not write."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","description":"CWE-770 Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-405","description":"CWE-405 Asymmetric Resource Consumption (Amplification)","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-20T21:29:03.284Z","orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","shortName":"CPANSec"},"references":[{"tags":["release-notes"],"url":"https://metacpan.org/release/GETTY/Crypt-Age-0.004/changes"}],"solutions":[{"lang":"en","value":"Upgrade to Crypt-Age 0.004 or later."}],"source":{"discovery":"UNKNOWN"},"title":"Crypt::Age versions before 0.004 for Perl allow CPU exhaustion via an unbounded number of recipient stanzas, each costing an X25519 scalar multiplication in unwrap_file_key","x_generator":{"engine":"cpansec-cna-tool 0.1"}}},"cveMetadata":{"assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","assignerShortName":"CPANSec","cveId":"CVE-2026-85783","datePublished":"2026-10-20T21:29:03.284Z","dateReserved":"2026-09-04T16:29:19.634Z","dateUpdated":"2026-10-21T00:17:19.299Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-20 22:20:05","lastModifiedDate":"2026-10-21 01:17:39","problem_types":["CWE-405","CWE-770","CWE-770 CWE-770 Allocation of Resources Without Limits or Throttling","CWE-405 CWE-405 Asymmetric Resource Consumption (Amplification)"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"85783","Ordinal":"1","Title":"Crypt::Age versions before 0.004 for Perl allow CPU exhaustion v","CVE":"CVE-2026-85783","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"85783","Ordinal":"1","NoteData":"Crypt::Age versions before 0.004 for Perl allow CPU exhaustion via an unbounded number of recipient stanzas, each costing an X25519 scalar multiplication in unwrap_file_key.\n\nThe header parser accepts any number of recipient stanzas, and unwrap_file_key tries every identity against every X25519 stanza. Each attempt runs a scalar multiplication, an HKDF and a ChaCha20-Poly1305 open. The header MAC cannot be checked first, because its key comes from the file key, which only a successful unwrap produces.\n\nEach stanza is 98 bytes of attacker-chosen header and buys one scalar multiplication per identity held, and the file is rejected only after every one of them has run. A caller reaches this through decrypt, decrypt_file or decrypt_filehandle whenever it decrypts a file it did not write.","Type":"Description","Title":"Crypt::Age versions before 0.004 for Perl allow CPU exhaustion v"}]}}}