{"cve":"CVE-2026-77781","nvd":{"published":"2026-08-22T00:16:46.710","modified":"2026-10-15T19:10:00.173","status":"Deferred","description":"Tie::Hash::Regex versions before 2.0.0 for Perl will throw an exception on unparseable lookup keys.\n\nThe FETCH, EXISTS and DELETE methods throw an exception when on malformed regular expressions.\n\nEach method falls back to a regex match when the key is not already stored in the hash, compiling the caller's key with a bare qr// and no eval guard. A key that is not a valid regular expression pattern, such as a single unmatched bracket, dies.\n\nAn application that looks up externally supplied strings in a tied hash will die on an invalid key.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-248"],"references":["https://github.com/davorg-cpan/tie-hash-regex/commit/4239732cb76233543e2ded8ff5e0f238af152e0c.patch","https://metacpan.org/release/DAVECROSS/Tie-Hash-Regex-2.0.0/source/Changes","http://www.openwall.com/lists/oss-security/2026/08/22/2"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:49:38.260478770+00:00"},"epss":{"cve":"CVE-2026-77781","score":0.00609,"percentile":0.48869,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}