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CVE-2017-5673

22
FAUCET Score

CVE-2017-5673 describes a stored Cross-Site Scripting (XSS) vulnerability in the Kunena extension for Joomla!, specifically versions 5.0.2 through 5.0.4. This flaw allows attackers to inject malicious JavaScript into forum message subjects, which is then executed when other users view the affected messages. The vulnerability has a CVSSv3 score of 6.1 (Medium), indicating it can be exploited remotely with low attack complexity, requiring user interaction, and potentially leading to limited confidentiality and integrity impacts. The affected files are primarily related to message display layouts within the Crypsis and Crypsisb3 templates. There is no evidence of active exploitation, nor are there known public exploit codes in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting it has not garnered significant attention. The issue was resolved in Kunena version 5.0.5.

Impacted Technologies

VendorProductVersion(s)CPE
5.0.2CPE matchmatch criteria
cpe:2.3:a:kunena:kunena:5.0.2:*:*:*:*:joomla\!:*:*
5.0.3CPE matchmatch criteria
cpe:2.3:a:kunena:kunena:5.0.3:*:*:*:*:joomla\!:*:*
5.0.4CPE matchmatch criteria
cpe:2.3:a:kunena:kunena:5.0.4:*:*:*:*:joomla\!:*:*

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
0.69%
Probability of exploitation in next 30 days
EPSS Percentile
49.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0069 is in the 55th percentile among its peer group of 26,208 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

Remediation records are not available for this CVE.

References

fox.ra.it / technical-articles/kunena-vulnerability-2017-01.html
ExploitThird Party Advisory
securityfocus.com / bid/101677