Secuno
ENNL
Book demo

CVE-2022-27926

Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS)

6.1 MEDIUMActively exploited (CISA KEV)EPSS 17.6%
  1. Published20 Apr 2022
  2. Added to CISA KEV3 Apr 2023
  3. Remediation due24 Apr 2023
Actively exploited (CISA KEV)

Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability by allowing an endpoint URL to accept parameters without sanitizing.

Added to KEV: 3 Apr 2023Federal remediation due: 24 Apr 2023

Description

A reflected cross-site scripting (XSS) vulnerability in the /public/launchNewWindow.jsp component of Zimbra Collaboration (aka ZCS) 9.0 allows unauthenticated attackers to execute arbitrary web script or HTML via request parameters.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

Synacor Zimbra Collaboration Suite9.0.0

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-928838.7
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.1 before…
CVE-2026-938868.3
IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to execute…
CVE-2026-1096338.1
Frappe ERPNext before 15.119.1 and 16.x before 16.32.0 contains a stored cross-site…
CVE-2025-714328.1
Frappe ERPNext before 14.92.1 and 15.x before 15.83.0 contains a reflected cross-site…
CVE-2026-1095588.7
EdgeEver 1.6.0 through 1.112.0 contains a stored cross-site scripting vulnerability in…
CVE-2026-1095578.7
EdgeEver through 1.112.0 contains a stored cross-site scripting vulnerability in…

Frequently asked

Is CVE-2022-27926 being actively exploited?

Yes. CVE-2022-27926 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 3 Apr 2023.

How severe is CVE-2022-27926?

CVE-2022-27926 has a CVSS 3.1 base score of 6.1, rated medium. EPSS estimates a 17.6% probability of exploitation.

Which products are affected by CVE-2022-27926?

Affected products include Synacor Zimbra Collaboration Suite.

How do I fix CVE-2022-27926?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2022-27926 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.