CVE-2018-16839

Curl versions 7.33.0 through 7.61.1 are vulnerable to a buffer overrun in the SASL authentication code that may lead to denial of service.

• CWE-122
• CWE-190
• CWE-119

• http://www.securitytracker.com/id/1042012Third Party Advisory, VDB Entry
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16839Issue Tracking, Third Party Advisory
• https://curl.haxx.se/docs/CVE-2018-16839.htmlPatch, Vendor Advisory
• https://github.com/curl/curl/commit/f3a24d7916b9173c69a3e0ee790102993833d6c5Patch, Third Party Advisory
• https://lists.apache.org/thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37fa1ecc89f1146f%40%3Cdevnull.infra.apache.org%3E
• https://lists.debian.org/debian-lts-announce/2018/11/msg00005.htmlMailing List, Third Party Advisory
• https://security.gentoo.org/glsa/201903-03Third Party Advisory
• https://usn.ubuntu.com/3805-1/Third Party Advisory
• https://www.debian.org/security/2018/dsa-4331Third Party Advisory
• http://www.securitytracker.com/id/1042012Third Party Advisory, VDB Entry
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16839Issue Tracking, Third Party Advisory
• https://curl.haxx.se/docs/CVE-2018-16839.htmlPatch, Vendor Advisory
• https://github.com/curl/curl/commit/f3a24d7916b9173c69a3e0ee790102993833d6c5Patch, Third Party Advisory
• https://lists.apache.org/thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37fa1ecc89f1146f%40%3Cdevnull.infra.apache.org%3E
• https://lists.debian.org/debian-lts-announce/2018/11/msg00005.htmlMailing List, Third Party Advisory
• https://security.gentoo.org/glsa/201903-03Third Party Advisory
• https://usn.ubuntu.com/3805-1/Third Party Advisory
• https://www.debian.org/security/2018/dsa-4331Third Party Advisory

Published

Oct 31, 2018

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.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2018-16831Smarty before 3.1.33-dev-4 allows attackers to bypass the tr…
• CVE-2018-16832CSRF in the anti-csrf decorator in xunfeng 0.2.0 allows an a…
• CVE-2018-16833Zoho ManageEngine Desktop Central 10.0.271 has XSS via the "…
• CVE-2018-16836Rubedo through 3.4.0 contains a Directory Traversal vulnerab…9.8
• CVE-2018-16837Ansible "User" module leaks any data which is passed on as a…7.8
• CVE-2018-16838A flaw was found in sssd Group Policy Objects implementation…5.4
• CVE-2018-1684IBM WebSphere MQ 8.0 through 9.1 is vulnerable to a error wi…5.3
• CVE-2018-16840A heap use-after-free flaw was found in curl versions from 7…9.8
• CVE-2018-16841Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 a…6.5
• CVE-2018-16842Curl versions 7.14.1 through 7.61.1 are vulnerable to a heap…4.4
• CVE-2018-16843nginx before versions 1.15.6 and 1.14.1 has a vulnerability …7.5
• CVE-2018-16844nginx before versions 1.15.6 and 1.14.1 has a vulnerability …7.5