What is CVE-2018-12040?

CVE-2018-12040 is a medium-severity vulnerability in Sensiolabs Symfony, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-06-13.

How severe is CVE-2018-12040?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Sensiolabs Symfony

CVE-2018-12040

Reflected Cross-site scripting (XSS) vulnerability in the web profiler in SensioLabs Symfony 3.3.6 allows remote attackers to inject arbitrary web script or HTML via the "file" parameter, aka an _profiler/open?file= URI. NOTE: The vendor states "The XSS ... is in the web profiler, a tool that should never be deployed in production (so, we don't handle those issues as security issues).

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.013 (67.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Sensiolabs Symfony — versions 3.3.6
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (mailing-list, Exploit, x_refsource_BUGTRAQ, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2018-12040?: CVE-2018-12040 is a medium-severity vulnerability in Sensiolabs Symfony, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-06-13.
How severe is CVE-2018-12040?: Medium severity. CVSS v3 base score is 6.1 out of 10.