CVE-2022-27926

MEDIUMNVD 6.19.0▲Trending — 4 sources updated this weekExploited in the wild

6.1

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 v3: 6.1
EG Score: 9.0(high)
EPSS: 99.9%
KEV: ⚠ Exploited

Published

April 21, 2022

Last Modified

October 31, 2025

References (7)

cve@mitrehttps://wiki.zimbra.com/wiki/Security_Center
cve@mitrehttps://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24
cve@mitrehttps://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
af854a3a-2127-422b-91ae-364da2661108https://wiki.zimbra.com/wiki/Security_Center
af854a3a-2127-422b-91ae-364da2661108https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24
af854a3a-2127-422b-91ae-364da2661108https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-27926

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-79Cross-site Scripting (XSS)

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-10 03:51 UTCEG score recompute
2026-06-10 03:51 UTCGHSA enrichment
2026-06-09 23:43 UTCEG score recompute
2026-06-09 23:43 UTCGHSA enrichment
2026-06-09 19:34 UTCEG score recompute
2026-06-09 19:34 UTCGHSA enrichment
2026-06-09 18:42 UTCCISA KEV update
2026-06-09 17:12 UTCCISA KEV update
2026-06-09 15:26 UTCEG score recompute
2026-06-09 15:26 UTCGHSA enrichment
2026-06-09 11:17 UTCEG score recompute
2026-06-09 11:17 UTCGHSA enrichment
2026-06-09 07:09 UTCEG score recompute
2026-06-09 07:08 UTCGHSA enrichment
2026-06-09 03:00 UTCEG score recompute
2026-06-09 03:00 UTCGHSA enrichment
2026-06-08 22:51 UTCEG score recompute
2026-06-08 22:51 UTCGHSA enrichment
2026-06-08 19:16 UTCCISA KEV update
2026-06-08 18:42 UTCEG score recompute

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Nucleihttp/cves/2022/CVE-2022-27926.yaml
First seen Jan 1, 2022
Zimbra Collaboration (ZCS) - Cross Site Scripting
Open source ↗

Frequently asked(6)

What is CVE-2022-27926?

CVE-2022-27926 is a medium vulnerability published on April 21, 2022. 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.

When was CVE-2022-27926 disclosed?

CVE-2022-27926 was first published in the National Vulnerability Database on April 21, 2022, with the most recent update on October 31, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-27926 actively exploited?

Yes. CISA added CVE-2022-27926 to the Known Exploited Vulnerabilities catalog on April 3, 2023, affecting Synacor Zimbra Collaboration Suite (ZCS). KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

What is the CVSS score of CVE-2022-27926?

CVE-2022-27926 has a CVSS v3 base score of 6.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.

Which products are affected by CVE-2022-27926?

CVE-2022-27926 affects Synacor Zimbra Collaboration Suite (ZCS). The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2022-27926?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-27926, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2022-27926

📅 Published

🔄 Last Modified

🔗 References (7)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-27926?

🔗 Related CVEs(same CWE)

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Published

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References (7)

Frequently asked(6)

Related CVEs(same CWE)