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CVE-2018-17859

18
FAUCET Score

CVE-2018-17859 is a medium-severity vulnerability affecting Joomla! versions prior to 3.8.13. It involves inadequate checks within the com_contact component, allowing for mail submission even when forms are disabled. This issue has a low attack complexity and requires low privileges, potentially leading to a low impact on integrity but no confidentiality or availability impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.5.0, < 3.8.13CPE matchmatch criteria
cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.35%
Probability of exploitation in next 30 days
EPSS Percentile
68.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0135 is in the 82nd percentile among its peer group of 21,977 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 0.0 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/751-20181001-core-hardening-com-contact-contact-form.html
Vendor Advisory
securityfocus.com / bid/105559
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041914
Third Party AdvisoryVDB Entry