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CVE-2017-16856

22
FAUCET Score

CVE-2017-16856 is a cross-site scripting (XSS) vulnerability affecting Atlassian Confluence versions prior to 6.5.2, specifically within the RSS Feed macro. Attackers can inject arbitrary HTML or JavaScript by manipulating RSS properties used as links without proper scheme restrictions. This medium-severity vulnerability (CVSS 6.1) requires user interaction and could lead to information disclosure or defacement. There is no known active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.5.2CPE matchmatch criteria
cpe:2.3:a:atlassian:confluence:*:*:*:*:*:*:*:*

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
0.81%
Probability of exploitation in next 30 days
EPSS Percentile
53.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0081 is in the 62nd 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

Remediation records are not available for this CVE.

References

jira.atlassian.com / browse/CONFSERVER-54395
Issue TrackingVendor Advisory
securityfocus.com / bid/102094
Third Party AdvisoryVDB Entry