CVE-2019-12387

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.

• CWE-74

• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00030.htmlBroken Link
• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00042.htmlBroken Link
• https://github.com/twisted/twisted/commit/6c61fc4503ae39ab8ecee52d10f10ee2c371d7e2Patch, Third Party Advisory
• https://labs.twistedmatrix.com/2019/06/twisted-1921-released.htmlExploit, Release Notes, Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2G5RPDQ4BNB336HL6WW5ZJ344MAWNN7N/
• https://twistedmatrix.com/pipermail/twisted-python/2019-June/032352.htmlExploit, Release Notes, Vendor Advisory
• https://usn.ubuntu.com/4308-1/Third Party Advisory
• https://usn.ubuntu.com/4308-2/Third Party Advisory
• https://www.oracle.com/security-alerts/cpuapr2020.htmlPatch, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00030.htmlBroken Link
• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00042.htmlBroken Link
• https://github.com/twisted/twisted/commit/6c61fc4503ae39ab8ecee52d10f10ee2c371d7e2Patch, Third Party Advisory
• https://labs.twistedmatrix.com/2019/06/twisted-1921-released.htmlExploit, Release Notes, Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2G5RPDQ4BNB336HL6WW5ZJ344MAWNN7N/
• https://twistedmatrix.com/pipermail/twisted-python/2019-June/032352.htmlExploit, Release Notes, Vendor Advisory
• https://usn.ubuntu.com/4308-1/Third Party Advisory
• https://usn.ubuntu.com/4308-2/Third Party Advisory
• https://www.oracle.com/security-alerts/cpuapr2020.htmlPatch, Third Party Advisory

Published

Jun 10, 2019

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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