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CVE-2018-11323

27
FAUCET Score

CVE-2018-11323 is a high-severity vulnerability affecting Joomla! Core versions prior to 3.8.8, where inadequate checks allowed authenticated users to escalate privileges by modifying access levels of user groups with higher permissions. This flaw carries a CVSS score of 8.8 (High), indicating it can be exploited remotely with low complexity by a low-privileged user, leading to complete compromise of confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.8.8CPE matchmatch criteria
cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*

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
2.73%
Probability of exploitation in next 30 days
EPSS Percentile
84.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0273 is in the 83rd 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

Remediation records are not available for this CVE.

References

developer.joomla.org / security-centre/729-20180501-core-acl-violation-in-access-levels.html
Vendor Advisory
securityfocus.com / bid/104276
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040966
Third Party AdvisoryVDB Entry