Page generated: 11 Nov 2026, 11:53 UTC
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CVE-2022-27926

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 6.1 (MEDIUM) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.0/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 6.1: +0.91
  • Fresh EPSS: 17.63%: +0.09

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 8 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

BleepingComputer
Press · 12 Feb 2024, 08:00 · CISA: Roundcube email server bug now exploited in attacks - BleepingComputer
Help Net Security
Press · 25 Oct 2023, 07:00 · Roundcube webmail zero-day exploited to spy on government entities (CVE-2023-5631) - Help Net Security
WeLiveSecurity
Press · 17 Aug 2023, 07:00 · Mass-spreading campaign targeting Zimbra users - WeLiveSecurity
BleepingComputer
Press · 17 Aug 2023, 07:00 · Phishing campaign steals accounts for Zimbra email servers worlwide - BleepingComputer
The Cyber Express
Press · 07 Apr 2023, 10:00 · LockBit Ransomware Hits TF-AMD Microelectronics of Malaysia - The Cyber Express
See all 8 source documents
Security Affairs
Press · 31 Mar 2023, 07:00 · Russian APT group Winter Vivern targets email portals of NATO and diplomats - Security Affairs
Proofpoint
Press · 30 Mar 2023, 07:00 · Winter Vivern Uses Zimbra Vulnerability to Target NATO Email - Proofpoint
BleepingComputer
Press · 30 Mar 2023, 07:00 · Winter Vivern hackers exploit Zimbra flaw to steal NATO emails - BleepingComputer

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.0 (2026-11-02 15:13). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 6.1; EPSS 17.6%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:38.168185+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
20 Apr 2022, 23:23
First press mention
30 Mar 2023, 07:00
Added to the CISA KEV catalog
03 Apr 2023, 00:00
Latest press mention
12 Feb 2024, 08:00
Score calculated
05 Nov 2026, 13:58