{"id":"CVE-2026-14741","summary":"HTTP::Date versions before 6.08 for Perl allow CPU exhaustion via polynomial regex backtracking in parse_date","details":"HTTP::Date versions before 6.08 for Perl allow CPU exhaustion via polynomial regex backtracking in parse_date.\n\nparse_date() matches the date string against a chain of alternative regexes, and str2time() delegates to it. Several of these patterns place unbounded quantifiers next to each other before a trailing `\\s*$` anchor. A valid date prefix followed by a long interior run of digits, letters, or whitespace and a single trailing byte that defeats the final match forces the engine to repartition the run, giving polynomial (about quadratic) backtracking. A header value of a few tens of kilobytes runs for tens of seconds of CPU.\n\nHTTP::Date parses timestamps such as HTTP `Date`, `Expires`, and `Last-Modified` headers, which commonly originate from untrusted sources. Any caller that passes an untrusted date header to str2time() or parse_date() can be driven to consume unbounded CPU, a denial of service.","modified":"2026-07-29T03:51:37.803997702Z","published":"2026-07-17T15:20:07.201Z","related":["SUSE-SU-2026:22859-1","openSUSE-SU-2026:11350-1","openSUSE-SU-2026:21427-1"],"database_specific":{"cna_assigner":"CPANSec","cwe_ids":["CWE-1333"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/14xxx/CVE-2026-14741.json"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/07/17/10"},{"type":"WEB","url":"https://cpan.org/modules"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/14xxx/CVE-2026-14741.json"},{"type":"ADVISORY","url":"https://metacpan.org/release/OALDERS/HTTP-Date-6.08/changes"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-14741"},{"type":"REPORT","url":"https://github.com/libwww-perl/HTTP-Date/pull/33"},{"type":"FIX","url":"https://github.com/libwww-perl/HTTP-Date/commit/78c20952cdfbf11e03cf1199ad70f13298a84c5c.patch"},{"type":"PACKAGE","url":"https://github.com/libwww-perl/HTTP-Date"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/libwww-perl/http-date","events":[{"introduced":"0"},{"fixed":"0c3bdf91a2aafc6886613219122df71cbe64caf5"},{"fixed":"78c20952cdfbf11e03cf1199ad70f13298a84c5c"}],"database_specific":{"source":["DESCRIPTION","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"6.08"}]}}],"versions":["v6.07","v6.06","v6.05","v6.04","v6.03"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-14741.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}