Zulip up to 10.2 Channel Privacy authorization

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Zulip up to 10.2. This impacts an unknown function of the component Channel Privacy Handler. Executing a manipulation can lead to authorization. This vulnerability is tracked as CVE-2025-47930. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Zulip up to 10.2. This vulnerability affects an unknown functionality of the component Channel Privacy Handler. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. As an impact it is known to affect integrity. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability was named CVE-2025-47930 since 05/14/2025. The exploitation appears to be easy. The attack can be initiated remotely. The technical details are unknown and an exploit is not available.

Upgrading to version 10.3 eliminates this vulnerability. The upgrade is hosted for download at zulip.readthedocs.io. Applying the patch d2ff4bda4c3efa30fc3ab1f151255cfdbf370f78 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-863 / CWE-285 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Zulip 10.3
Patch: d2ff4bda4c3efa30fc3ab1f151255cfdbf370f78

Timelineinfo

05/14/2025 🔍
05/16/2025 +2 days 🔍
05/16/2025 +0 days 🔍
08/27/2025 +103 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-rqg7-xfqg-v7q5
Status: Confirmed

CVE: CVE-2025-47930 (🔍)
GCVE (CVE): GCVE-0-2025-47930
GCVE (VulDB): GCVE-100-309142

Entryinfo

Created: 05/16/2025 08:10
Updated: 08/27/2025 11:07
Changes: 05/16/2025 08:10 (69), 08/27/2025 11:07 (12)
Complete: 🔍
Cache ID: 216::103

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