CVE-2018-19486

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-11-23 · updated 2026-06-17
Weakness: CWE-426

Description

Git before 2.19.2 on Linux and UNIX executes commands from the current working directory (as if '.' were at the end of $PATH) in certain cases involving the run_command() API and run-command.c, because there was a dangerous change from execvp to execv during 2017.

Affected products

Canonical Ubuntu Linux: 18.04, 18.10
git: before 2.19.2 — fixed in 2.19.2

How to fix

Upgrade to a fixed version: git 2.19.2. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/106020
http://www.securitytracker.com/id/1042166
https://access.redhat.com/errata/RHSA-2018:3800
https://git.kernel.org/pub/scm/git/git.git/commit/?id=321fd82389742398d2924640ce3a61791fd27d60
https://git.kernel.org/pub/scm/git/git.git/tree/Documentation/RelNotes/2.19.2.txt
https://security.gentoo.org/glsa/201904-13
https://usn.ubuntu.com/3829-1/
http://www.securityfocus.com/bid/106020
http://www.securitytracker.com/id/1042166
https://access.redhat.com/errata/RHSA-2018:3800
https://git.kernel.org/pub/scm/git/git.git/commit/?id=321fd82389742398d2924640ce3a61791fd27d60
https://git.kernel.org/pub/scm/git/git.git/tree/Documentation/RelNotes/2.19.2.txt

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