CVE-2014-0138 Auth bypass in n/a

What is CVE-2014-0138?

CVE-2014-0138 is a medium-severity authentication bypass vulnerability in Debian Debian Linux, published on 15 Apr 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The default configuration in cURL and libcurl 7.10.6 before 7.36.0 re-uses (1) SCP, (2) SFTP, (3) POP3, (4) POP3S, (5) IMAP, (6) IMAPS, (7) SMTP, (8) SMTPS, (9) LDAP, and (10) LDAPS connections, which might allow context-dependent attackers to connect as other users via a request, a similar issue to CVE-2014-0015.

Weakness: CWE-287

Which versions are affected by CVE-2014-0138?

It affects 3 products.

Products include Debian Debian Linux, Haxx Curl, Haxx Libcurl.

How do I fix CVE-2014-0138?

Upgrade to a fixed version.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2014-0138 being exploited?

There is no known exploitation of CVE-2014-0138 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2014-0138, CLEANSTART-2026-JW10713, CURL-CVE-2014-0138, DEBIAN-CVE-2014-0138, GHSA-j832-g86m-353x.