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CVE-2017-8802

21
FAUCET Score

CVE-2017-8802 is a medium-severity cross-site scripting (XSS) vulnerability affecting Zimbra Collaboration Suite (ZCS) versions prior to 8.8.0 Beta2, specifically through the "Show Snippet" functionality. An attacker could exploit this by tricking an authenticated user into interacting with specially crafted content, leading to the injection of arbitrary web script or HTML. While the attack complexity is low, it requires user interaction and could result in limited confidentiality and integrity impacts. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.7.11CPE matchmatch criteria
cpe:2.3:a:synocor:zimbra_collaboration_suite:*:*:*:*:*:*:*:*
8.8.0CPE matchmatch criteria
cpe:2.3:a:synocor:zimbra_collaboration_suite:8.8.0:beta1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.26%
Probability of exploitation in next 30 days
EPSS Percentile
66.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0126 is in the 95th percentile among its peer group of 15,224 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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

Patch Available

Vendor Patches (1)

wagopatch availablevia llm_extracted
Fixed in: ['8.6.0 Patch9', '8.7.11 Patch1', '8.8.0 Beta2']

Vendor Advisories (1)

wagollm-wago-74228145502c745cLOW

Persistent XSS snippet

References

bugzilla.zimbra.com / show_bug.cgi
Permissions Required
wiki.zimbra.com / wiki/Zimbra_Security_Advisories
PatchVendor Advisory
compass-security.com / fileadmin/Datein/Research/Advisories/CSNC-2018-001_zimbra_stored_xss.txt
Third Party Advisory
securityfocus.com / archive/1/541661/100/0/threaded