{"cve":"CVE-2026-25577","nvd":{"published":"2026-02-10T18:16:37.290","modified":"2026-06-17T10:24:53.327","status":"Deferred","description":"Emmett is a framework designed to simplify your development process. Prior to 1.3.11, the cookies property in mmett_core.http.wrappers.Request does not handle CookieError exceptions when parsing malformed Cookie headers. This allows unauthenticated attackers to trigger HTTP 500 errors and cause denial of service. This vulnerability is fixed in 1.3.11.","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","CWE-307"],"references":["https://github.com/emmett-framework/core/commit/9557ea23a27cbadf7774d8bca6bbe4b54fa8a3ec","https://github.com/emmett-framework/core/security/advisories/GHSA-x6cr-mq53-cc76","https://github.com/emmett-framework/core/security/advisories/GHSA-x6cr-mq53-cc76"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:23:35.260773158+00:00"},"epss":{"cve":"CVE-2026-25577","score":0.00311,"percentile":0.24055,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-x6cr-mq53-cc76","url":"https://osv.dev/vulnerability/GHSA-x6cr-mq53-cc76","summary":"Emmett-Core: Unhandled CookieError Exception Causing Denial of Service","modified":"2026-07-13T16:43:32.287421547Z","packages":[{"ecosystem":"PyPI","name":"emmett-core","purl":"pkg:pypi/emmett-core","ranges":["<1.3.11"],"fixed":["1.3.11"]}]},{"id":"PYSEC-2026-2469","url":"https://osv.dev/vulnerability/PYSEC-2026-2469","summary":"Emmett-Core: Unhandled CookieError Exception Causing Denial of Service","modified":"2026-07-13T16:31:46.093031049Z","packages":[{"ecosystem":"PyPI","name":"emmett-core","purl":"pkg:pypi/emmett-core","ranges":["<1.3.11"],"fixed":["1.3.11"]}]}],"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."]}