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4 vulnerabilities found for Zimbra Collaboration Suite (ZCS) by Zimbra

CVE-2026-93647 (GCVE-0-2026-93647)
Vulnerability from cvelistv5
Published
2026-09-25 13:58
Modified
2026-09-28 12:39
Severity ?
9.3 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CWE
  • CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Summary
An unauthenticated calendar sender can place active markup in a COUNTER message's RFC From address. Selecting the message in Zimbra Classic triggers stored XSS, allowing the attacker to access mailbox data and act as the victim.
References
Impacted products
Vendor Product Version
Zimbra Zimbra Collaboration Suite (ZCS) Version: 0   ≤
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CVE-2026-93643 (GCVE-0-2026-93643)
Vulnerability from cvelistv5
Published
2026-09-25 13:57
Modified
2026-09-26 03:55
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-863 - Incorrect Authorization
Summary
When OnlyOffice/Document Editing is available, an unauthenticated remote attacker with access to an existing supported public Briefcase document can abuse unsigned save fields to perform path-traversal writes and execute commands as zimbra.
References
Impacted products
Vendor Product Version
Zimbra Zimbra Collaboration Suite (ZCS) Version: 0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

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CVE-2026-93642 (GCVE-0-2026-93642)
Vulnerability from cvelistv5
Published
2026-09-25 13:56
Modified
2026-09-25 16:11
Severity ?
9.3 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CWE
  • CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Summary
An unauthenticated sender can forge a share notification that triggers stored XSS when a signed-in Zimbra Modern recipient clicks Accept Share, allowing the attacker to access mailbox data and act as the victim.
References
Impacted products
Vendor Product Version
Zimbra Zimbra Collaboration Suite (ZCS) Version: 0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

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CVE-2026-93641 (GCVE-0-2026-93641)
Vulnerability from cvelistv5
Published
2026-09-25 13:55
Modified
2026-09-25 16:11
Severity ?
9.3 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CWE
  • CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Summary
An unauthenticated sender can forge a share notification that triggers stored XSS when a signed-in Zimbra Classic recipient clicks Accept Share, allowing the attacker to access mailbox data and act as the victim.
References
Impacted products
Vendor Product Version
Zimbra Zimbra Collaboration Suite (ZCS) Version: 0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

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