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CVE-2017-11666

20
FAUCET Score

CVE-2017-11666 describes a cross-site scripting (XSS) vulnerability in the file previewer plugin of Kopano WebApp versions 3.3.0 and earlier. This medium-severity vulnerability (CVSS 6.1) allows unauthenticated attackers to inject malicious web script or HTML by tricking a user into previewing a specially crafted file. While the attack complexity is low, it requires user interaction and could lead to limited data compromise and integrity issues. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.3.0CPE matchmatch criteria
cpe:2.3:a:kopano:webapp:*:*:*:*:*:*:*:*

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
0.75%
Probability of exploitation in next 30 days
EPSS Percentile
51.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0075 is in the 58th 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

stash.kopano.io / projects/KWA/repos/filepreviewer/commits/85d2b5c2d27f461bba12e9491fcc4b0d8fde771a
Third Party Advisory