What is CVE-2020-18984?

CVE-2020-18984 is a medium-severity vulnerability in Synacor Zimbra Collaboration Suite, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-12-15.

How severe is CVE-2020-18984?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2020-18984 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Synacor Zimbra Collaboration Suite

CVE-2020-18984

A reflected cross-site scripting (XSS) vulnerability in the zimbraAdmin/public/secureRequest.jsp component of Zimbra Collaboration 8.8.12 allows unauthenticated attackers to execute arbitrary web scripts or HTML via a host header injection.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.008 (53.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Synacor Zimbra_collaboration_suite — versions 8.8.12
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2020-18984?: CVE-2020-18984 is a medium-severity vulnerability in Synacor Zimbra Collaboration Suite, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-12-15.
How severe is CVE-2020-18984?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2020-18984 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.