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CVE-2018-3814

27
FAUCET Score

CVE-2018-3814 describes a critical arbitrary PHP code execution vulnerability in Craft CMS version 2.6.3000. An authenticated attacker can exploit this by uploading a specially crafted .jpg file containing embedded PHP code, then using the "Replace it" option to rename it to a .php extension. This vulnerability carries a CVSSv3 score of 8.8 (High), indicating a network-exploitable flaw with low privileges required, leading to high impact on confidentiality, integrity, and availability. While no public exploits or active exploitation have been observed, and community discussion is minimal, the potential for severe system compromise necessitates prompt patching.

Impacted Technologies

VendorProductVersion(s)CPE
2.6.3000CPE matchmatch criteria
cpe:2.3:a:craftcms:craft_cms:2.6.3000:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.88%
Probability of exploitation in next 30 days
EPSS Percentile
77.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0188 is in the 76th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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

Vendor Advisories (1)

composerGHSA-r342-vjc4-wrmjhigh

Craft CMS PHP Code Injection Vulnerability

May 13, 2022

References

github.com / Snowty/myCVE/blob/master/CraftCMS-2.6.3000/README.md
ExploitThird Party Advisory