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.
Does this matter?
Lower severity and a low EPSS score (1.29%). Track it; it rarely justifies an emergency change on its own.
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).
- CVSS 3.0
- 6.1 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 1.29% probability · 70th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- sensiolabs/symfony
- Source
- cve@mitre.org
EPSS 1.3% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.