Improper Neutralization of Argument Delimiters in a Command in Symfony - CVE-2026-45068
Published: May 21, 2026
Vulnerability identifier: #VU132072
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-45068
CWE-ID: CWE-88
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to inject command-line arguments.
The vulnerability exists due to improper neutralization of argument delimiters in SendmailTransport when appending recipient addresses to the sendmail command line in -t mode. A local user can supply a recipient address beginning with - to inject command-line arguments.
The issue occurs only when the sendmail transport is used in -t mode.
Affected software
Symfony
Debian Linux
symfony (Debian package)
Debian Linux
symfony (Debian package)
How to mitigate CVE-2026-45068
Install security update from vendor's website.
Symfony - addressed in versions 5.4.52, 6.4.40, 7.4.12, 8.0.12
symfony (Debian package) - addressed in versions 5.4.53+dfsg-0+deb12u1, 6.4.41+dfsg-0+deb13u1
symfony (Debian package) - addressed in versions 5.4.53+dfsg-0+deb12u1, 6.4.41+dfsg-0+deb13u1