CVE-2014-6387 Auth bypass in n/a
Remote attackers can bypass authentication in MantisBT by using a password starting with a null byte, gaining unauthorized access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2014-6387?
CVE-2014-6387 is a medium-severity authentication bypass vulnerability in Mantisbt Mantisbt, published on 22 Oct 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
gpc_api.php in MantisBT 1.2.17 and earlier allows remote attackers to bypass authenticated via a password starting will a null byte, which triggers an unauthenticated bind.
Weakness: CWE-287
Which versions are affected by CVE-2014-6387?
It affects 1 product.
Products include Mantisbt Mantisbt.
How do I fix CVE-2014-6387?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2014-6387 being exploited?
There is no known exploitation of CVE-2014-6387 in the wild and no public exploit code.
Other vulnerabilities in Mantisbt Mantisbt
- CVE-2019-15074 MantisBT allows cross-site scripting (XSS) via crafted filename
- CVE-2026-30849 MantisBT SOAP API has an authentication bypass vulnerability on MySQL
- CVE-2025-47776 MantisBT: Authentication bypass for some passwords due to PHP type juggling
- CVE-2017-7615 MantisBT allows arbitrary password reset
- CVE-2026-33517 MantisBT Vulnerable to Stored HTML Injection in Tag Delete Confirmation
Sources
Also known as GHSA-2vwf-xc9m-9w4j.