CVE-2022-45911

CVE-2022-45911 is a medium-severity vulnerability in Zimbra Collaboration with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

• Severity: Medium (CVSS 3.x base score 6.1)
• EPSS exploit prediction: 0% (33rd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-79
• Affected product: Zimbra Collaboration
• Published: 2023-01-06
• Last modified: 2026-06-17

Description

An issue was discovered in Zimbra Collaboration (ZCS) 9.0. XSS can occur on the Classic UI login page by injecting arbitrary JavaScript code in the username field. This occurs before the user logs into the system, which means that even if the attacker executes arbitrary JavaScript, they will not get any sensitive information.

Frequently asked questions

What is CVE-2022-45911?

An issue was discovered in Zimbra Collaboration (ZCS) 9.0. XSS can occur on the Classic UI login page by injecting arbitrary JavaScript code in the username field. This occurs before the user logs into the system, which means that even if the attacker executes arbitrary JavaScript, they will not get any sensitive information.

How severe is CVE-2022-45911?

CVE-2022-45911 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2022-45911 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-45911?

CVE-2022-45911 primarily affects Zimbra Collaboration. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-45911?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-45911 published?

CVE-2022-45911 was published on 2023-01-06 and last updated on 2026-06-17.

References

• https://wiki.zimbra.com/wiki/Security_Center
• https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

Affected products (28)

• cpe:2.3:a:zimbra:collaboration:9.0.0:-:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p0:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p1:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p10:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p11:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p12:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p13:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p14:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p15:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p16:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p19:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p2:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p20:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p21:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p23:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p24:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p24.1:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p25:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p26:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p27:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p3:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p4:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p5:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p6:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p7:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p7.1:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p8:*:*:*:*:*:*
• cpe:2.3:a:zimbra:collaboration:9.0.0:p9:*:*:*:*:*:*

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• CVE-2021-35209 — Critical (CVSS 9.8): An issue was discovered in ProxyServlet.java in the /proxy servlet in Zimbra Collaboration Suite 8.8 before 8.8.15…
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