CVE-2018-12040

Name: CVE-2018-12040
Creator: NVD / NIST
Published: 2018-06-13T22:29:00.55+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.31%

Last modified Jun 17, 2026

CVE-2018-12040 is a vulnerability of currently unknown severity. 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 ... EPSS estimates a 1.31% chance of exploitation in the next 30 days.

Description

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).

Metrics

EPSS Probability

1.31%

67.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Sensiolabs	Symfony	3.3.6

References

http://packetstormsecurity.com/files/148125/SensioLabs-Symfony-3.3.6-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/542071/100/0/threadedExploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/148125/SensioLabs-Symfony-3.3.6-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/542071/100/0/threadedExploit, Third Party Advisory, VDB Entry

Timeline

Published: Jun 13, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-12040?

How severe is CVE-2018-12040?

Severity scoring for CVE-2018-12040 is pending analysis. The EPSS model estimates a 1.31% probability of exploitation in the next 30 days.

How do I fix CVE-2018-12040?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-12040?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST