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CVE-2018-12040

20
FAUCET Score

CVE-2018-12040 is a reflected Cross-site Scripting (XSS) vulnerability in the web profiler component of SensioLabs Symfony 3.3.6, allowing remote attackers to inject arbitrary web script via the "file" parameter. The vendor notes this tool should not be deployed in production, thus not treating it as a security issue. With a CVSS score of 6.1 (Medium), the attack requires user interaction and can lead to low impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code, or significant community discussion, indicating a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
3.3.6CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:3.3.6:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.31%
Probability of exploitation in next 30 days
EPSS Percentile
67.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0132 is in the 80th percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/148125/SensioLabs-Symfony-3.3.6-Cross-Site-Scripting.html
ExploitThird Party AdvisoryVDB Entry
securityfocus.com / archive/1/542071/100/0/threaded
ExploitThird Party AdvisoryVDB Entry