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CVE-2018-18307

22
FAUCET Score

CVE-2018-18307 describes a Stored Cross-Site Scripting (XSS) vulnerability in AlchemyCMS version 4.1.0, specifically within the /admin/pictures image field. This vulnerability, rated Medium severity with a CVSS score of 6.1, could allow an attacker to inject malicious scripts into the application, potentially leading to information disclosure or limited impact on integrity. Exploitation requires user interaction (UI:R) and an authenticated session, as the vendor disputes the report's validity due to the need for an authorized cookie. There is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.1.0CPE matchmatch criteria
cpe:2.3:a:alchemy-cms:alchemy_cms:4.1.0:*:*:*:*:*:*:*

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
1.69%
Probability of exploitation in next 30 days
EPSS Percentile
74.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0169 is in the 87th percentile among its peer group of 26,209 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

Vendor Advisories (1)

rubygemsGHSA-7mj4-2984-955fmedium

Withdrawn Advisory: AlchemyCMS is vulnerable to stored XSS via the /admin/pictures image field

May 14, 2022

References

packetstormsecurity.com / files/149787/Alchemy-CMS-4.1-Stable-Cross-Site-Scripting.html
ExploitThird Party AdvisoryVDB Entry
github.com / AlchemyCMS/alchemy_cms/blob/4.1-stable/app/controllers/alchemy/admin/base_controller.rb
github.com / AlchemyCMS/alchemy_cms/blob/4.1-stable/app/controllers/alchemy/admin/pictures_controller.rb
github.com / AlchemyCMS/alchemy_cms/blob/4.1-stable/app/controllers/alchemy/admin/resources_controller.rb
exploit-db.com / exploits/45601