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CVE-2026-81668— Rubygem-katello: cross-tenant content view filter rule access and modification via unauthorized parent filter lookup

Quick assessment

Affected
Red Hat Red Hat Satellite 6
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

RubyGems katello是RubyGems社区的一个系统生命周期管理平台。 RubyGems katello存在授权问题漏洞，该漏洞源于Content View Filter Rules API未正确实施授权，可能导致已认证的低权限用户通过提供其他组织的过滤器标识符访问和修改该组织过滤器规则，造成过滤规则信息未授权披露和未发布内容视图过滤配置未授权修改。

CVSS 5.4 · Medium EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1079

Affected Version Matrix 2

VendorProduct Version RangeStatus
Red Hat Red Hat Satellite 6 any affected
any affected
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I. Basic Information for CVE-2026-81668

Vulnerability Information
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Vulnerability Title
Rubygem-katello: cross-tenant content view filter rule access and modification via unauthorized parent filter lookup
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in Katello where the Content View Filter Rules API does not properly enforce authorization on the parent Content View Filter. An authenticated, low-privileged user with Content View permissions in one organization may be able to access and modify filter rules belonging to a Content View Filter in another organization by supplying that filter's identifier. This can result in unauthorized disclosure of filter-rule information and unauthorized changes to unpublished Content View filter configuration.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
RubyGems katello 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RubyGems katello是RubyGems社区的一个系统生命周期管理平台。 RubyGems katello存在授权问题漏洞，该漏洞源于Content View Filter Rules API未正确实施授权，可能导致已认证的低权限用户通过提供其他组织的过滤器标识符访问和修改该组织过滤器规则，造成过滤规则信息未授权披露和未发布内容视图过滤配置未授权修改。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Satellite 6 - cpe:/a:redhat:satellite:6
Red Hat Red Hat Satellite 6 - cpe:/a:redhat:satellite:6

II. Public POCs for CVE-2026-81668

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III. Intelligence Information for CVE-2026-81668

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Vendor Advisories for CVE-2026-81668 (1)

Same Patch Batch · Red Hat · 2026-08-27 · 6 CVEs total

CVE-2026-78002 7.5 HIGH Rsyslog: rsyslog: denial of service via heap buffer overflow in rainerscript replace() fun
CVE-2026-5680 7.5 HIGH Undertow-core: undertow: denial of service via websocket permessage-deflate processing
CVE-2026-81658 6.5 MEDIUM Foreman: cross-tenant disclosure of template revisions via unauthorized audit lookup
CVE-2026-80179 5.9 MEDIUM Jwcrypto: jwcrypto: denial of service via malformed jwe tokens
CVE-2026-81893 4.7 MEDIUM Gdk-pixbuf: gdk-pixbuf: invalid write in jpeg icc profile parser on error recovery

IV. Related Vulnerabilities

Same product: Red Hat Satellite 6
Same vendor: Red Hat
Same weakness: CWE-639

V. Comments for CVE-2026-81668

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