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CVE-2026-11785 Red Hat CVE debrief

CVE-2026-11785 is a medium-severity vulnerability in Red Hat Directory Server. A type confusion in the SSO token extended operation handler discloses partial stack address information in LDAP responses to authenticated users. The vulnerability has a CVSS score of 4.3 and was published on [cvePublishedAt](https://www.cve.org/CVERecord?id=CVE-2026-11785).

Vendor
Red Hat
Product
Red Hat Directory Server 11
CVSS
MEDIUM 4.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-30
Advisory published
2026-06-09
Advisory updated
2026-06-30

Who should care

Users of Red Hat Directory Server 12.0, 13.0, and 389 Directory Server, as well as Red Hat Enterprise Linux 9.0 and 10.0, should apply patches or mitigations.

Technical summary

The vulnerability is caused by a type confusion in the SSO token extended operation handler. This confusion leads to the disclosure of partial stack address information in LDAP responses to authenticated users.

Defensive priority

MEDIUM

Recommended defensive actions

  • Apply patches or mitigations provided by Red Hat.
  • Review and update configurations according to Red Hat's recommendations.

Evidence notes

Evidence from NVD and Red Hat indicates a type confusion vulnerability in Red Hat Directory Server.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11785 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11785

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-11785 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11785

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.