CVE-2026-45068CWE-88

Symfony: Argument Injection in SendmailTransport via Dash-Prefixed Recipient Address

High · published July 14, 2026

CVSS v4.0
8.7
EPSS
1%
Percentile
43.6
In the wild
Unconfirmed
What it is

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, SendmailTransport in -t mode appended recipient addresses to the sendmail command line without a -- end-of-options separator, allowing an address beginning with - to be interpreted as a sendmail command-line option instead of an address. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00524 · 43.6th percentile
Weakness
CWE-88 · Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Published
2026-07-14T19:02Z
EPSS history
Timeline
  • 14 JUL 19:02Z
    Symfony: Argument Injection in SendmailTransport via Dash-Prefixed Recipient Address
    cvelistv5