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Vulnerability Details :

CVE-2025-47930

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-15 May, 2025 | 23:17
Updated At-16 May, 2025 | 13:19
Rejected At-
Credits

Zulip Server has access control bypass for restrictions on creation of specific channel types

Zulip is an open-source team chat application. Starting in version 10.0 and prior to version 10.3, the "Who can create public channels" access control mechanism can be circumvented by creating a private or web-public channel, and then changing the channel privacy to public. A similar technique works for creating private channels without permission, though such a process requires either the API or modifying the HTML, as we do mark the "private" radio button as disabled in such cases. Version 10.3 contains a patch.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:15 May, 2025 | 23:17
Updated At:16 May, 2025 | 13:19
Rejected At:
▼CVE Numbering Authority (CNA)
Zulip Server has access control bypass for restrictions on creation of specific channel types

Zulip is an open-source team chat application. Starting in version 10.0 and prior to version 10.3, the "Who can create public channels" access control mechanism can be circumvented by creating a private or web-public channel, and then changing the channel privacy to public. A similar technique works for creating private channels without permission, though such a process requires either the API or modifying the HTML, as we do mark the "private" radio button as disabled in such cases. Version 10.3 contains a patch.

Affected Products
Vendor
Kandra Labs, Inc. (Zulip)zulip
Product
zulip
Versions
Affected
  • >= 10.0, < 10.3
Problem Types
TypeCWE IDDescription
CWECWE-863CWE-863: Incorrect Authorization
Type: CWE
CWE ID: CWE-863
Description: CWE-863: Incorrect Authorization
Metrics
VersionBase scoreBase severityVector
4.05.3MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Version: 4.0
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/zulip/zulip/security/advisories/GHSA-rqg7-xfqg-v7q5
x_refsource_CONFIRM
https://github.com/zulip/zulip/commit/d2ff4bda4c3efa30fc3ab1f151255cfdbf370f78
x_refsource_MISC
https://zulip.com/help/configure-who-can-create-channels
x_refsource_MISC
https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-10-3
x_refsource_MISC
Hyperlink: https://github.com/zulip/zulip/security/advisories/GHSA-rqg7-xfqg-v7q5
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/zulip/zulip/commit/d2ff4bda4c3efa30fc3ab1f151255cfdbf370f78
Resource:
x_refsource_MISC
Hyperlink: https://zulip.com/help/configure-who-can-create-channels
Resource:
x_refsource_MISC
Hyperlink: https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-10-3
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:16 May, 2025 | 00:15
Updated At:27 Aug, 2025 | 02:26

Zulip is an open-source team chat application. Starting in version 10.0 and prior to version 10.3, the "Who can create public channels" access control mechanism can be circumvented by creating a private or web-public channel, and then changing the channel privacy to public. A similar technique works for creating private channels without permission, though such a process requires either the API or modifying the HTML, as we do mark the "private" radio button as disabled in such cases. Version 10.3 contains a patch.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.05.3MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary3.15.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Type: Secondary
Version: 4.0
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Primary
Version: 3.1
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CPE Matches
Kandra Labs, Inc. (Zulip)
zulip
>>zulip>>Versions from 10.0(inclusive) to 10.3(exclusive)
cpe:2.3:a:zulip:zulip:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-863Primarysecurity-advisories@github.com
CWE ID: CWE-863
Type: Primary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/zulip/zulip/commit/d2ff4bda4c3efa30fc3ab1f151255cfdbf370f78security-advisories@github.com
Patch
https://github.com/zulip/zulip/security/advisories/GHSA-rqg7-xfqg-v7q5security-advisories@github.com
Third Party Advisory
https://zulip.com/help/configure-who-can-create-channelssecurity-advisories@github.com
Product
https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-10-3security-advisories@github.com
Release Notes
Hyperlink: https://github.com/zulip/zulip/commit/d2ff4bda4c3efa30fc3ab1f151255cfdbf370f78
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/zulip/zulip/security/advisories/GHSA-rqg7-xfqg-v7q5
Source: security-advisories@github.com
Resource:
Third Party Advisory
Hyperlink: https://zulip.com/help/configure-who-can-create-channels
Source: security-advisories@github.com
Resource:
Product
Hyperlink: https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-10-3
Source: security-advisories@github.com
Resource:
Release Notes

Change History

0
Information is not available yet

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