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CVE-2017-20191

14
FAUCET Score

CVE-2017-20191 is a cross-site scripting (XSS) vulnerability found in Zimbra zm-admin-ajax versions up to 8.8.1, specifically within the XFormItem.prototype.setError function. This flaw allows for remote exploitation by manipulating the message argument in the Form Textbox Field Error Handler component. The vulnerability is rated as LOW severity (CVSS 3.5), indicating a network-based attack with low attack complexity and requiring user interaction, leading to a low impact on integrity and no impact on confidentiality or availability. There is no evidence of active exploitation, nor is exploit code publicly available in Metasploit, Nuclei, or ExploitDB. The vulnerability has received minimal community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
ZimbraZm-Admin-Ajax
8.8.0, 8.8.1CNA affected

CVSS Data

CVSS version used by this source: 3.1

3.5LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.1
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.47%
Probability of exploitation in next 30 days
EPSS Percentile
37.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0047 is in the 79th percentile among its peer group of 404 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.2 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

github.com / Zimbra/zm-admin-ajax/commit/bb240ce0c71c01caabaa43eed30c78ba8d7d3591
github.com / Zimbra/zm-admin-ajax/releases/tag/8.8.2
vuldb.com
vuldb.com