CVE-2026-18922: Red Hat Directory Server 11.5 e4s For Rhel 8
Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.
A flaw was found in 389 Directory Server. During SASL PLAIN authentication, a stale identity carried in a Cyrus SASL auxiliary property from a prior failed bind attempt can be installed on a connection following a subsequent, unrelated successful bind, regardless of which SASL mechanism completes that second bind. An attacker can send a SASL PLAIN bind as cn=Directory Manager with an incorrect password, then complete a SASL ANONYMOUS bind on the same connection, causing the server to grant Directory Manager authority without any valid credentials. A variant using a valid low-privileged account's own successful bind instead of an anonymous one is also possible.
Affected products
- Red Hat Red Hat Directory Server 11.5 e4s For Rhel 8: before 8060020260908152739.0ca98e7e (fixed in 8060020260908152739.0ca98e7e)
- Red Hat Red Hat Directory Server 11.7 e4s For Rhel 8: before 8080020260903102346.f969626e (fixed in 8080020260903102346.f969626e)
- Red Hat Red Hat Directory Server 11.9 For Rhel 8: before 8100020260904171440.37ed7c03 (fixed in 8100020260904171440.37ed7c03)
- Red Hat Red Hat Directory Server 12
- Red Hat Red Hat Directory Server 12.2 e4s For Rhel 9: before 9020020260903155914.1674d574 (fixed in 9020020260903155914.1674d574)
- Red Hat Red Hat Directory Server 12.4 e4s For Rhel 9: before 9040020260903102623.1674d574 (fixed in 9040020260903102623.1674d574)
- Red Hat Red Hat Directory Server 13
- Red Hat Red Hat Enterprise Linux 10: before 0:3.2.0-10.el10_2 (fixed in 0:3.2.0-10.el10_2)
- Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support: before 0:3.0.6-21.el10_0 (fixed in 0:3.0.6-21.el10_0)
- Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - Extension: before 0:1.2.11.15-97.el6_10.1 (fixed in 0:1.2.11.15-97.el6_10.1)
- Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support: before 0:1.3.11.1-15.el7_9 (fixed in 0:1.3.11.1-15.el7_9)
- Red Hat Red Hat Enterprise Linux 8: before 8100020260904155442.25e700aa (fixed in 8100020260904155442.25e700aa)
- Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support: before 8040020260901171549.96015a92 (fixed in 8040020260901171549.96015a92)
- Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On: before 8040020260901171549.96015a92 (fixed in 8040020260901171549.96015a92)
- Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support: before 8060020260901145727.824efc52 (fixed in 8060020260901145727.824efc52)
- Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On: before 8060020260901145727.824efc52 (fixed in 8060020260901145727.824efc52)
- Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service: before 8080020260831180218.6dbb3803 (fixed in 8080020260831180218.6dbb3803)
- Red Hat Red Hat Enterprise Linux 8.8 Update Services For SAP Solutions: before 8080020260831180218.6dbb3803 (fixed in 8080020260831180218.6dbb3803)
- Red Hat Red Hat Enterprise Linux 9: before 0:2.8.0-10.el9_8 (fixed in 0:2.8.0-10.el9_8)
- Red Hat Red Hat Enterprise Linux 9.2 Update Services For SAP Solutions: before 0:2.2.4-22.el9_2 (fixed in 0:2.2.4-22.el9_2)
- Red Hat Red Hat Enterprise Linux 9.4 Update Services For SAP Solutions: before 0:2.4.5-29.el9_4 (fixed in 0:2.4.5-29.el9_4)
- Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support: before 0:2.6.1-24.el9_6 (fixed in 0:2.6.1-24.el9_6)
Published 2026-09-07. Last modified 2026-10-08.