{"cve":"CVE-2019-12387","nvd":{"published":"2019-06-10T12:29:00.287","modified":"2026-06-17T02:14:32.733","status":"Modified","description":"In Twisted before 19.2.1, twisted.web did not validate or sanitize URIs or HTTP methods, allowing an attacker to inject invalid characters such as CRLF.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-74"],"references":["http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00030.html","http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00042.html","https://github.com/twisted/twisted/commit/6c61fc4503ae39ab8ecee52d10f10ee2c371d7e2","https://labs.twistedmatrix.com/2019/06/twisted-1921-released.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2G5RPDQ4BNB336HL6WW5ZJ344MAWNN7N/"],"products":["canonical:ubuntu_linux","fedoraproject:fedora","oracle:solaris","oracle:zfs_storage_appliance_kit","twisted:twisted"],"source":"nvd","synced_at":"2026-10-19T20:57:00.690689396+00:00"},"epss":{"cve":"CVE-2019-12387","score":0.02523,"percentile":0.84868,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-6cc5-2vg4-cc7m","url":"https://osv.dev/vulnerability/GHSA-6cc5-2vg4-cc7m","summary":"Twisted CRLF Injection","modified":"2024-11-25T18:46:25.183917Z","packages":[{"ecosystem":"PyPI","name":"twisted","purl":"pkg:pypi/twisted","ranges":["<19.2.1"],"fixed":["19.2.1"]}]},{"id":"PYSEC-2019-128","url":"https://osv.dev/vulnerability/PYSEC-2019-128","summary":"","modified":"2023-11-08T04:01:03.808700Z","packages":[{"ecosystem":"PyPI","name":"twisted","purl":"pkg:pypi/twisted","ranges":["<19.2.1"],"fixed":["19.2.1"]}]}],"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."]}