What is CVE-2019-6981?

CVE-2019-6981 is a medium-severity vulnerability in Synacor Zimbra Collaboration Suite, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2019-05-29.

How severe is CVE-2019-6981?

Medium severity. CVSS v3 base score is 6.5 out of 10.

SSRF in Synacor Zimbra Collaboration Suite

CVE-2019-6981

Zimbra Collaboration Suite 8.7.x through 8.8.11 allows Blind SSRF in the Feed component.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2019-05-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.012 (65.6th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: -0.001

Affected products

Synacor Zimbra Collaboration Suite — versions 8.7.11, 8.8.9, 8.8.10

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

wiki.zimbra.com/wiki/Zimbra_Security_Advisories (Vendor Advisory)
bugzilla.zimbra.com/show_bug.cgi (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2019-6981?: CVE-2019-6981 is a medium-severity vulnerability in Synacor Zimbra Collaboration Suite, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2019-05-29.
How severe is CVE-2019-6981?: Medium severity. CVSS v3 base score is 6.5 out of 10.