{"id":"CVE-2026-8368","state":"PUBLISHED","title":"LWP::UserAgent versions before 6.83 for Perl leak Authorization and Proxy-Authorization headers on cross-origin redirects","description":"LWP::UserAgent versions before 6.83 for Perl leak Authorization and Proxy-Authorization headers on cross-origin redirects.\n\nOn a 3xx response, the redirect handler strips only Host and Cookie before issuing the follow-up request. Caller-supplied Authorization and Proxy-Authorization headers are sent unchanged to the redirect target, including across scheme, host, or port changes.\n\nA redirect to an attacker controlled host therefore discloses the caller's credentials to that host.","publishedAt":"2026-05-12T14:01:25.365Z","updatedAt":"2026-05-19T17:16:03.676Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","source":"CISA-ADP"},"assigner":"CPANSec","products":["OALDERS LWP::UserAgent"],"affected":[{"vendor":"OALDERS","product":"LWP::UserAgent","packageName":"libwww-perl","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"6.83","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","programFiles":["lib/LWP/UserAgent.pm"],"programRoutines":[{"name":"LWP::UserAgent::request"}],"repo":"https://github.com/libwww-perl/libwww-perl"}],"references":["https://github.com/libwww-perl/libwww-perl/commit/9c4aeb6f2dd32f2b7eaf2d7827cade31ea6cb2c6.patch","https://metacpan.org/release/OALDERS/libwww-perl-6.83/changes","https://github.com/libwww-perl/libwww-perl/pull/512","https://github.com/libwww-perl/libwww-perl/pull/284","http://www.openwall.com/lists/oss-security/2026/05/12/7"],"weaknesses":["CWE-522"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/8xxx/CVE-2026-8368.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-8368","state":"PUBLISHED","datePublished":"2026-05-12T14:01:25.365Z","dateUpdated":"2026-05-19T17:16:03.676Z","assignerShortName":"CPANSec","assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateReserved":"2026-05-11T21:33:14.480Z"},"containers":{"cna":{"title":"LWP::UserAgent versions before 6.83 for Perl leak Authorization and Proxy-Authorization headers on cross-origin redirects","descriptions":[{"lang":"en","value":"LWP::UserAgent versions before 6.83 for Perl leak Authorization and Proxy-Authorization headers on cross-origin redirects.\n\nOn a 3xx response, the redirect handler strips only Host and Cookie before issuing the follow-up request. Caller-supplied Authorization and Proxy-Authorization headers are sent unchanged to the redirect target, including across scheme, host, or port changes.\n\nA redirect to an attacker controlled host therefore discloses the caller's credentials to that host."}],"affected":[{"vendor":"OALDERS","product":"LWP::UserAgent","packageName":"libwww-perl","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"6.83","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","programFiles":["lib/LWP/UserAgent.pm"],"programRoutines":[{"name":"LWP::UserAgent::request"}],"repo":"https://github.com/libwww-perl/libwww-perl"}],"references":[{"url":"https://github.com/libwww-perl/libwww-perl/commit/9c4aeb6f2dd32f2b7eaf2d7827cade31ea6cb2c6.patch","tags":["patch"]},{"url":"https://metacpan.org/release/OALDERS/libwww-perl-6.83/changes","tags":["release-notes"]},{"url":"https://github.com/libwww-perl/libwww-perl/pull/512","tags":["issue-tracking"]},{"url":"https://github.com/libwww-perl/libwww-perl/pull/284","tags":["related"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-522","description":"CWE-522 Insufficiently Protected Credentials","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"CPANSec","orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateUpdated":"2026-05-12T14:01:25.365Z"},"credits":[{"lang":"en","type":"reporter","value":"Kai Aizen"}],"solutions":[{"lang":"en","value":"Upgrade to libwww-perl 6.83 or later."}],"source":{"discovery":"UNKNOWN"},"timeline":[{"lang":"en","time":"2026-05-11T00:00:00.000Z","value":"Issue reported."},{"lang":"en","time":"2026-05-12T00:00:00.000Z","value":"libwww-perl 6.83 released with fix."}],"x_generator":{"engine":"cpansec-cna-tool 0.1"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/05/12/7"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-05-12T17:41:03.656Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.5,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-05-13T14:30:39.897128Z","id":"CVE-2026-8368","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-19T17:16:03.676Z"}}]}}}