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CVE-2024-4350

16
FAUCET Score

CVE-2024-4350 describes a Stored Cross-Site Scripting (XSS) vulnerability in Concrete CMS versions 9.0.0 to 9.3.2 and below 8.5.18, specifically within the RSS Displayer feature. A highly privileged attacker (rogue administrator) could inject malicious code due to insufficient input validation, which is then stored and executed when other users view the affected content. The vulnerability has a CVSS v3.1 score of 4.8 (Medium), indicating network access, low attack complexity, and requiring user interaction, with potential for limited impact on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 8.5.18CPE matchmatch criteria
cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*
>= 9.0.0, < 9.3.3CPE matchmatch criteria
cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*
>= 5.0.0, < 8.5.18CPE match
cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

5.1MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
VS Confidentiality
LOW
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.49%
Probability of exploitation in next 30 days
EPSS Percentile
39.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0049 is in the 59th percentile among its peer group of 4,937 CVEs.

Social Chatter

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

Remediation

Patch Available

Vendor Patches (3)

composerpatch availablevia ghsa
Product: concrete5/concrete5Fixed in: 8.5.18
composerpatch availablevia ghsa
Product: concrete5/concrete5Fixed in: 9.3.3
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-q5wx-m95r-4cgcmedium

Concrete CMS Stored Cross-site Scripting vulnerability

Aug 12, 2024

References

documentation.concretecms.org / 9-x/developers/introduction/version-history/933-release-notes
Release NotesVendor Advisory
documentation.concretecms.org / developers/introduction/version-history/8518-release-notes
Release NotesVendor Advisory
github.com / concretecms/concretecms/commit/c08d9671cec4e7afdabb547339c4bc0bed8eab06
Patch
github.com / concretecms/concretecms/pull/12166
Patch