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180 vulnerabilities by zimbra
CVE-2026-50055 (GCVE-0-2026-50055)
Vulnerability from nvd – Published: 2026-10-08 16:25 – Updated: 2026-10-08 19:10
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite Sieve Notify Filter Action Bypasses Mail Forwarding Restriction via Variable Expansion
Summary
A policy-enforcement flaw in Zimbra Collaboration Suite allows an authenticated user to bypass disabled mail forwarding by using a Sieve notify action to send copies of email content and headers to an arbitrary address.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 19:10 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite |
Affected:
0 , < 10.1.20
(semver)
|
Date Public
2026-10-08 16:20
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CVE-2026-50054 (GCVE-0-2026-50054)
Vulnerability from nvd – Published: 2026-10-08 16:25 – Updated: 2026-10-08 19:10
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite GrantRightsRequest SOAP Handler Allows Self-Granting of Undocumented loginAs Mailbox Delegation Right
Summary
An authorization flaw in Zimbra Collaboration Suite’s GrantRightsRequest allows an attacker with access to an authenticated account to grant another local account the loginAs right, creating persistent mailbox access and mail-sending authority that survives password changes and session expiry.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 19:10 UTC
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite |
Affected:
0 , < 10.1.20
(semver)
|
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CVE-2026-10631 (GCVE-0-2026-10631)
Vulnerability from nvd – Published: 2026-10-08 16:25 – Updated: 2026-10-08 19:11
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite EWS Extension Authorization Bypass via Crafted Composite Folder/Item Identifier
Summary
An authorization bypass in the EWS FindItem handler of Zimbra Collaboration Suite 10.1.0 through 10.1.19 allows an authenticated user with EWS enabled to read complete mailbox items, including raw MIME and attachments, from arbitrary local accounts without a share or delegation grant.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 19:11 UTC
CWE
- CWE-639 - Authorization bypass through User-Controlled key
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite |
Affected:
0 , < 10.1.20
(semver)
|
Date Public
2026-10-08 16:16
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CVE-2026-93647 (GCVE-0-2026-93647)
Vulnerability from nvd – Published: 2026-09-25 13:58 – Updated: 2026-09-28 12:39
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite Classic Web Client Stored Cross-Site Scripting via Crafted Calendar COUNTER Message From Address
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.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-26 03:55 UTC
CWE
- CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite (ZCS) |
Affected:
0 , < 10.1.21
(semver)
|
Date Public
2026-09-25 13:53
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CVE-2026-93643 (GCVE-0-2026-93643)
Vulnerability from nvd – Published: 2026-09-25 13:57 – Updated: 2026-09-26 03:55
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite OnlyOffice Integration Path Traversal Leading to Remote Code Execution via Unauthenticated /downloadas Request
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.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 00:00 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite (ZCS) |
Affected:
0 , < 10.1.21
(semver)
|
Date Public
2026-09-25 13:53
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CVE-2026-93642 (GCVE-0-2026-93642)
Vulnerability from nvd – Published: 2026-09-25 13:56 – Updated: 2026-09-25 16:11
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite Modern Web Client Stored Cross-Site Scripting via Forged Share Invitation
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.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 16:10 UTC
CWE
- CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite (ZCS) |
Affected:
0 , < 10.1.21
(semver)
|
Date Public
2026-09-25 13:52
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CVE-2026-93641 (GCVE-0-2026-93641)
Vulnerability from nvd – Published: 2026-09-25 13:55 – Updated: 2026-09-25 16:11
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite Classic Web Client Stored Cross-Site Scripting via Forged Share Invitation
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.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 16:11 UTC
CWE
- CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
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Affected:
0 , < 10.1.21
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Date Public
2026-09-25 13:52
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CVE-2026-73576 (GCVE-0-2026-73576)
Vulnerability from nvd – Published: 2026-08-13 15:26 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, weak cryptographic key generation vulnerability exists in the OnlyOffice integration. The zimbraDocumentEditingJwtSecret is generated using an insecure random number generator, resulting in insufficient entropy. An attacker who obtains a JWT signed with the generated secret may be able to recover the JWT signing secret through offline brute-force, potentially enabling JWT forgery.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:49 UTC
CWE
- CWE-1241 - Use of Predictable Algorithm in Random Number Generator
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
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CVE-2026-73575 (GCVE-0-2026-73575)
Vulnerability from nvd – Published: 2026-08-13 15:24 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a Cross-Site Request Forgery (CSRF) vulnerability exists in the Exchange Web Services (EWS) endpoint of Zimbra Collaboration (ZCS) due to insufficient validation of request content types. An attacker can exploit this vulnerability by causing an authenticated user to submit a crafted request, potentially allowing unauthorized actions to be performed on behalf of the victim.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:49 UTC
CWE
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
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CVE-2026-73574 (GCVE-0-2026-73574)
Vulnerability from nvd – Published: 2026-08-13 15:23 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration before 10.1.17, a local file inclusion (LFI) vulnerability exists in the Zimbra Classic Web Client due to improper validation of the fu request parameter. An unauthenticated attacker can exploit this vulnerability by supplying a crafted path, potentially allowing unauthorized disclosure of protected files, such as WEB-INF/web.xml, within the web application directory. This occurs in the Forward servlet.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-669 - Incorrect Resource Transfer Between Spheres
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
(custom)
cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* |
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CVE-2026-73573 (GCVE-0-2026-73573)
Vulnerability from nvd – Published: 2026-08-13 15:22 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a path traversal vulnerability exists in the Zimbra Briefcase document editing functionality due to improper validation of the packages parameter. An authenticated attacker can exploit this vulnerability by supplying a crafted path traversal sequence, potentially allowing unauthorized disclosure of sensitive files within the web application directory.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-24 - Path Traversal: '../filedir'
Assigner
References
Impacted products
1 product
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Affected:
0 , < 10.1.17
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CVE-2026-73572 (GCVE-0-2026-73572)
Vulnerability from nvd – Published: 2026-08-13 15:21 – Updated: 2026-08-13 15:57
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a stored cross-site scripting (XSS) vulnerability exists in the Zimbra Classic Web Client due to insufficient sanitization of specific attachment content during inline preview. An attacker can send a crafted email containing a malicious attachment that, when previewed by a user, executes arbitrary JavaScript within the victim's browser session. Successful exploitation may allow an attacker to perform unauthorized actions on behalf of the victim user, potentially leading to data exfiltration or unauthorized access to sensitive information.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
Impacted products
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Affected:
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CVE-2026-73571 (GCVE-0-2026-73571)
Vulnerability from nvd – Published: 2026-08-13 15:20 – Updated: 2026-08-13 15:57
VLAI
EPSS
VEX
Summary
An authorization bypass vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.17 due to improper authorization validation in delegated email sending functionality. An authenticated attacker can send specially crafted SOAP requests to impersonate another user and send emails without possessing the required delegation or send-as permissions. This occurs in the SaveDraftRequest SOAP handler.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:51 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
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Affected:
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CVE-2026-73570 (GCVE-0-2026-73570)
Vulnerability from nvd – Published: 2026-08-13 15:19 – Updated: 2026-08-24 12:17Summary
A remote code execution vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.20 when the optional zimbra-snmp package is installed and SNMP notifications are enabled. Due to improper sanitization of untrusted input during SNMP notification processing, an unauthenticated attacker can send specially crafted SMTP requests that may result in execution of arbitrary operating system commands as the Zimbra user.
Severity
8.9 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-22 03:55 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | |
| https://wiki.zimbra.com/wiki/Security_Center | |
| https://moje.cert.pl/komunikaty/2026/145/aktywnie… | third-party-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.20
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CVE-2025-71275 (GCVE-0-2025-71275)
Vulnerability from nvd – Published: 2026-03-24 15:21 – Updated: 2026-03-25 15:39
VLAI
EPSS
VEX
This CVE was rejected due to being a duplicate of CVE-2024-45519.
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CVE-2026-50055 (GCVE-0-2026-50055)
Vulnerability from cvelistv5 – Published: 2026-10-08 16:25 – Updated: 2026-10-08 19:10
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite Sieve Notify Filter Action Bypasses Mail Forwarding Restriction via Variable Expansion
Summary
A policy-enforcement flaw in Zimbra Collaboration Suite allows an authenticated user to bypass disabled mail forwarding by using a Sieve notify action to send copies of email content and headers to an arbitrary address.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 19:10 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite |
Affected:
0 , < 10.1.20
(semver)
|
Date Public
2026-10-08 16:20
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CVE-2026-50054 (GCVE-0-2026-50054)
Vulnerability from cvelistv5 – Published: 2026-10-08 16:25 – Updated: 2026-10-08 19:10
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite GrantRightsRequest SOAP Handler Allows Self-Granting of Undocumented loginAs Mailbox Delegation Right
Summary
An authorization flaw in Zimbra Collaboration Suite’s GrantRightsRequest allows an attacker with access to an authenticated account to grant another local account the loginAs right, creating persistent mailbox access and mail-sending authority that survives password changes and session expiry.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 19:10 UTC
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
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| Zimbra | Zimbra Collaboration Suite |
Affected:
0 , < 10.1.20
(semver)
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CVE-2026-10631 (GCVE-0-2026-10631)
Vulnerability from cvelistv5 – Published: 2026-10-08 16:25 – Updated: 2026-10-08 19:11
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite EWS Extension Authorization Bypass via Crafted Composite Folder/Item Identifier
Summary
An authorization bypass in the EWS FindItem handler of Zimbra Collaboration Suite 10.1.0 through 10.1.19 allows an authenticated user with EWS enabled to read complete mailbox items, including raw MIME and attachments, from arbitrary local accounts without a share or delegation grant.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 19:11 UTC
CWE
- CWE-639 - Authorization bypass through User-Controlled key
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite |
Affected:
0 , < 10.1.20
(semver)
|
Date Public
2026-10-08 16:16
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CVE-2026-93647 (GCVE-0-2026-93647)
Vulnerability from cvelistv5 – Published: 2026-09-25 13:58 – Updated: 2026-09-28 12:39
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite Classic Web Client Stored Cross-Site Scripting via Crafted Calendar COUNTER Message From Address
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.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-26 03:55 UTC
CWE
- CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite (ZCS) |
Affected:
0 , < 10.1.21
(semver)
|
Date Public
2026-09-25 13:53
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CVE-2026-93643 (GCVE-0-2026-93643)
Vulnerability from cvelistv5 – Published: 2026-09-25 13:57 – Updated: 2026-09-26 03:55
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite OnlyOffice Integration Path Traversal Leading to Remote Code Execution via Unauthenticated /downloadas Request
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.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 00:00 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite (ZCS) |
Affected:
0 , < 10.1.21
(semver)
|
Date Public
2026-09-25 13:53
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CVE-2026-93642 (GCVE-0-2026-93642)
Vulnerability from cvelistv5 – Published: 2026-09-25 13:56 – Updated: 2026-09-25 16:11
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite Modern Web Client Stored Cross-Site Scripting via Forged Share Invitation
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.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 16:10 UTC
CWE
- CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite (ZCS) |
Affected:
0 , < 10.1.21
(semver)
|
Date Public
2026-09-25 13:52
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CVE-2026-93641 (GCVE-0-2026-93641)
Vulnerability from cvelistv5 – Published: 2026-09-25 13:55 – Updated: 2026-09-25 16:11
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite Classic Web Client Stored Cross-Site Scripting via Forged Share Invitation
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.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 16:11 UTC
CWE
- CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
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Affected:
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Date Public
2026-09-25 13:52
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CVE-2026-73576 (GCVE-0-2026-73576)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:26 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, weak cryptographic key generation vulnerability exists in the OnlyOffice integration. The zimbraDocumentEditingJwtSecret is generated using an insecure random number generator, resulting in insufficient entropy. An attacker who obtains a JWT signed with the generated secret may be able to recover the JWT signing secret through offline brute-force, potentially enabling JWT forgery.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:49 UTC
CWE
- CWE-1241 - Use of Predictable Algorithm in Random Number Generator
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
(custom)
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CVE-2026-73575 (GCVE-0-2026-73575)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:24 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a Cross-Site Request Forgery (CSRF) vulnerability exists in the Exchange Web Services (EWS) endpoint of Zimbra Collaboration (ZCS) due to insufficient validation of request content types. An attacker can exploit this vulnerability by causing an authenticated user to submit a crafted request, potentially allowing unauthorized actions to be performed on behalf of the victim.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:49 UTC
CWE
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
(custom)
cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* |
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CVE-2026-73574 (GCVE-0-2026-73574)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:23 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration before 10.1.17, a local file inclusion (LFI) vulnerability exists in the Zimbra Classic Web Client due to improper validation of the fu request parameter. An unauthenticated attacker can exploit this vulnerability by supplying a crafted path, potentially allowing unauthorized disclosure of protected files, such as WEB-INF/web.xml, within the web application directory. This occurs in the Forward servlet.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-669 - Incorrect Resource Transfer Between Spheres
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
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CVE-2026-73573 (GCVE-0-2026-73573)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:22 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a path traversal vulnerability exists in the Zimbra Briefcase document editing functionality due to improper validation of the packages parameter. An authenticated attacker can exploit this vulnerability by supplying a crafted path traversal sequence, potentially allowing unauthorized disclosure of sensitive files within the web application directory.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-24 - Path Traversal: '../filedir'
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
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CVE-2026-73572 (GCVE-0-2026-73572)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:21 – Updated: 2026-08-13 15:57
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a stored cross-site scripting (XSS) vulnerability exists in the Zimbra Classic Web Client due to insufficient sanitization of specific attachment content during inline preview. An attacker can send a crafted email containing a malicious attachment that, when previewed by a user, executes arbitrary JavaScript within the victim's browser session. Successful exploitation may allow an attacker to perform unauthorized actions on behalf of the victim user, potentially leading to data exfiltration or unauthorized access to sensitive information.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
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CVE-2026-73571 (GCVE-0-2026-73571)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:20 – Updated: 2026-08-13 15:57
VLAI
EPSS
VEX
Summary
An authorization bypass vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.17 due to improper authorization validation in delegated email sending functionality. An authenticated attacker can send specially crafted SOAP requests to impersonate another user and send emails without possessing the required delegation or send-as permissions. This occurs in the SaveDraftRequest SOAP handler.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:51 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
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CVE-2026-73570 (GCVE-0-2026-73570)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:19 – Updated: 2026-08-24 12:17Summary
A remote code execution vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.20 when the optional zimbra-snmp package is installed and SNMP notifications are enabled. Due to improper sanitization of untrusted input during SNMP notification processing, an unauthenticated attacker can send specially crafted SMTP requests that may result in execution of arbitrary operating system commands as the Zimbra user.
Severity
8.9 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-22 03:55 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | |
| https://wiki.zimbra.com/wiki/Security_Center | |
| https://moje.cert.pl/komunikaty/2026/145/aktywnie… | third-party-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.20
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CVE-2025-71275 (GCVE-0-2025-71275)
Vulnerability from cvelistv5 – Published: 2026-03-24 15:21 – Updated: 2026-03-25 15:39
VLAI
EPSS
VEX
This CVE was rejected due to being a duplicate of CVE-2024-45519.
Show details on NVD website{
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