CVE-2026-11791

MEDIUMNVD 5.05.0—
EchelonGraph scoreHIGH confidence

Score 5.0 from GitHub Security Advisory published 2026-06-18. NVD baseline CVSS 5.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.0Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A flaw was found in 389 Directory Server. During schema reload, the attr_syntax_swap_ht() function unconditionally frees attribute syntax information nodes, bypassing the refcount-based deferred deletion used elsewhere in the attribute syntax subsystem. If an administrator triggers schema reload while concurrent LDAP query traffic is active, worker threads may access freed memory, resulting in use-after-free or double-free and a denial of service (server crash).

CVSS v3
5.0
EG Score
5.0(high)
EPSS
11.5%
KEV
Not listed

Published

June 18, 2026

Last Modified

June 30, 2026

Advisory Details (3)

Auto-updated Jun 19, 2026
Patch available. Sources: redhat.
generic

Jira

https://redhat.atlassian.net/browse/PSIRTSUPT-7600
redhat

2485414 – (CVE-2026-11791) CVE-2026-11791 389-ds-base: 389-ds-base: use-after-free in schema reload via attr_syntax_swap_ht()

https://bugzilla.redhat.com/show_bug.cgi?id=2485414
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-11791

Vendor Advisories for CVE-2026-11791(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 22× in last 7d / 54× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 23:04 UTCEG score recompute
  2. 2026-07-06 23:04 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 22:46 UTCEG score recompute
  6. 2026-07-05 22:46 UTCGHSA enrichment
  7. 2026-07-05 02:30 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 22:28 UTCEG score recompute
  10. 2026-07-04 22:28 UTCGHSA enrichment
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-03 22:10 UTCEG score recompute
  13. 2026-07-03 22:10 UTCGHSA enrichment
  14. 2026-07-02 21:52 UTCEG score recompute
  15. 2026-07-02 21:52 UTCGHSA enrichment
  16. 2026-07-01 21:34 UTCEG score recompute
  17. 2026-07-01 21:34 UTCGHSA enrichment
  18. 2026-07-01 15:06 UTCEPSS rescore
  19. 2026-07-01 15:06 UTCEPSS rescore
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 21:13 UTCEG score recompute
  22. 2026-06-30 21:13 UTCGHSA enrichment
  23. 2026-06-29 20:54 UTCEG score recompute
  24. 2026-06-29 20:54 UTCGHSA enrichment
  25. 2026-06-29 14:06 UTCEPSS rescore
Show 29 more
  1. 2026-06-28 20:36 UTCEG score recompute
  2. 2026-06-28 20:36 UTCGHSA enrichment
  3. 2026-06-28 14:07 UTCEPSS rescore
  4. 2026-06-28 04:56 UTCEPSS rescore
  5. 2026-06-28 04:56 UTCEPSS rescore
  6. 2026-06-27 20:19 UTCEG score recompute
  7. 2026-06-27 20:19 UTCGHSA enrichment
  8. 2026-06-27 03:08 UTCEPSS rescore
  9. 2026-06-26 20:01 UTCEG score recompute
  10. 2026-06-26 20:01 UTCGHSA enrichment
  11. 2026-06-25 19:44 UTCEG score recompute
  12. 2026-06-25 19:44 UTCGHSA enrichment
  13. 2026-06-25 13:49 UTCEPSS rescore
  14. 2026-06-24 19:26 UTCEG score recompute
  15. 2026-06-24 19:26 UTCGHSA enrichment
  16. 2026-06-24 14:05 UTCEPSS rescore
  17. 2026-06-23 21:32 UTCEPSS rescore
  18. 2026-06-23 19:04 UTCEG score recompute
  19. 2026-06-23 19:04 UTCGHSA enrichment
  20. 2026-06-22 18:46 UTCEG score recompute
  21. 2026-06-22 18:46 UTCGHSA enrichment
  22. 2026-06-21 18:29 UTCEG score recompute
  23. 2026-06-21 18:28 UTCGHSA enrichment
  24. 2026-06-20 18:09 UTCEG score recompute
  25. 2026-06-20 18:08 UTCGHSA enrichment
  26. 2026-06-19 17:49 UTCEG score recompute
  27. 2026-06-19 17:49 UTCGHSA enrichment
  28. 2026-06-18 17:28 UTCEG score recompute
  29. 2026-06-18 17:24 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-11791?
CVE-2026-11791 is a medium vulnerability published on June 18, 2026. A flaw was found in 389 Directory Server. During schema reload, the attrsyntaxswap_ht() function unconditionally frees attribute syntax information nodes, bypassing the refcount-based deferred deletion used elsewhere in the attribute syntax subsystem. If an administrator triggers schema reload…
When was CVE-2026-11791 disclosed?
CVE-2026-11791 was first published in the National Vulnerability Database on June 18, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11791 actively exploited?
CVE-2026-11791 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-11791?
CVE-2026-11791 has a CVSS v3 base score of 5.0 (NVD).
How do I remediate CVE-2026-11791?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11791, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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