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CVE-2026-90462— Sssd: sssd: fail-open in ldap ppolicy access check allows continued authorization

一分钟漏洞结论

影响对象
Red Hat Red Hat Enterprise Linux 10
利用判断
尚无明确在野利用证据,仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本;无法立即升级时,限制受影响服务暴露并加强监测。

A flaw was found in SSSD. When configured with the LDAP access provider and including or , a fail-open condition in the LDAP ppolicy access check can occur if a user lookup returns zero results. This can incorrectly return success and cache an allow decision,

CVSS 5.4 · Medium

影响版本矩阵 7

厂商产品 版本范围状态
Red Hat Red Hat Enterprise Linux 10 全部 affected
Red Hat Red Hat Enterprise Linux 6 全部 unknown
Red Hat Red Hat Enterprise Linux 7 全部 affected
Red Hat Red Hat Enterprise Linux 8 全部 affected
Red Hat Red Hat Enterprise Linux 9 全部 affected
Red Hat Red Hat OpenShift Container Platform 4 全部 affected
全部 affected
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一、 漏洞 CVE-2026-90462 基础信息

漏洞信息

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Vulnerability Title
Sssd: sssd: fail-open in ldap ppolicy access check allows continued authorization
来源: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in SSSD. When configured with the LDAP access provider and `ldap_access_order` including `ppolicy` or `lockout`, a fail-open condition in the LDAP ppolicy access check can occur if a user lookup returns zero results. This can incorrectly return success and cache an allow decision, permitting continued authorization for a deleted or deprovisioned user. A remote attacker with prior valid account context could exploit this to maintain access to information and potentially make limited modifications to resources that should no longer be available.
来源: 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
来源: CVE Program / CVE List V5
Vulnerability Type
不充分权限或特权的处理不恰当
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4

二、漏洞 CVE-2026-90462 的公开POC

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三、漏洞 CVE-2026-90462 的情报信息

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CVE-2026-90462 厂商安全公告 (2)

同批安全公告 · Red Hat · 2026-09-22 · 共 6 条

CVE-2026-13087 8.8 HIGH Kernel: heap out-of-bounds write in the linux kernel rpc-over-rdma server reply path...
CVE-2026-95619 7.7 HIGH Gcc: libstdc++ integer overflow in `new` operator
CVE-2026-94640 7.5 HIGH Rpcbind: unbounded memory allocation in rpcbind statistics tracking allows unauthenticated
CVE-2026-95508 7.4 HIGH Libslirp: libslirp: heap buffer overflow in dhcpv6/tftp response builders on small interfa
CVE-2026-95503 6.8 MEDIUM Keycloak-services: keycloak-services: potential kdc spoofing bypass when kerberos password

IV. Related Vulnerabilities

V. Comments for CVE-2026-90462

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