Bug 2390786 (CVE-2025-26467)

Summary:	CVE-2025-26467 org.apache.cassandra:cassandra-all: Apache Cassandra: User with MODIFY permission on ALL KEYSPACES can escalate privileges to superuser via unsafe actions (4.0.16 only)
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	asoldano, bbaranow, bmaxwell, brian.stansberry, darran.lofthouse, dkreling, dosoudil, fjuma, gmalinko, istudens, ivassile, iweiss, janstey, mosmerov, msochure, msvehla, nwallace, pdelbell, pesilva, pjindal, pmackay, rstancel, rstepani, smaestri, tom.jenkinson
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A Privilege Defined With Unsafe Actions vulnerability exists in Apache Cassandra. In affected versions, a user with MODIFY permission on all keyspaces can exploit unsafe operations against certain system resources to escalate privileges and gain superuser access within the Cassandra cluster. This escalation is possible because granting MODIFY at the global keyspace level inadvertently extends to sensitive resources, allowing abuse beyond the intended scope of data modification privileges.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2025-08-25 15:01:46 UTC

Privilege Defined With Unsafe Actions vulnerability in Apache Cassandra. An user with MODIFY permission ON ALL KEYSPACES can escalate privileges to superuser within a targeted Cassandra cluster via unsafe actions to a system resource. Operators granting data MODIFY permission on all keyspaces on affected versions should review data access rules for potential breaches.



This issue affects Apache Cassandra 3.0.30, 3.11.17, 4.0.16, 4.1.7, 5.0.2, but this advisory is only for 4.0.16 because the fix to CVE-2025-23015 was incorrectly applied to 4.0.16, so that version is still affected.

Users in the 4.0 series are recommended to upgrade to version 4.0.17 which fixes the issue. Users from 3.0, 3.11, 4.1 and 5.0 series should follow recommendation from CVE-2025-23015.