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  4. CVE 2026 11789 389 ds base 389 ds base smd5 password storage
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Back to active CVEs
Medium · CVSS 4.9CVE-2026-11789

389-ds-base: 389-ds-base: smd5 password storage plugin salt length integer underflow crashCVE-2026-11789

Answer in brief

CVE-2026-11789 records a Medium severity (CVSS 4.9) vulnerability in 389-ds-base: 389-ds-base: smd5 password storage plugin salt length integer underflow crash. The current sources do not mark it as known exploited. The current feed maps Red Hat/389-ds-base (generic), Red Hat/redhat-ds:11/389-ds-base (generic), Red Hat/redhat-ds:12/389-ds-base (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jun 9, 2026Updated Jun 30, 2026Source checked Nov 3, 2026First seen by HOL Jun 30, 2026Material review Jun 30, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 4.9
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 4.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/389-ds-base (generic), Red Hat/redhat-ds:11/389-ds-base (generic), Red Hat/redhat-ds:12/389-ds-base (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/389-ds-basegeneric*Not reported
Red Hat/redhat-ds:11/389-ds-basegeneric*Not reported
Red Hat/redhat-ds:12/389-ds-basegeneric*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/389-ds-base, Red Hat/redhat-ds:11/389-ds-base, Red Hat/redhat-ds:12/389-ds-base.
  2. 2Review the reported fix. Source-reported workaround: Disable nsslapd-allow-hashed-passwords (default: off) to prevent non-DM users from setting pre-hashed passwords. Restrict Directory Manager credentials; limit DM access to management networks and audit DM operations via nsslapd-auditlog. Monitor for suspicious userPassword modifications. Migrate stored passwords from {SMD5} to {PBKDF2_SHA256} to eliminate the vulnerable code path for existing accounts.

Evidence timeline and material changes

  1. Published upstream

    Jun 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Jun 30, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Jun 30, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
Upstream source description

A flaw was found in 389 Directory Server. The SMD5 password storage plugin performs unsigned integer underflow when computing salt length from a crafted password hash shorter than 16 bytes, causing a buffer over-read that crashes the LDAP server during authentication.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-191
Source
CVE List V5
Source checked
Nov 3, 2026
References
2 linked sources
Open source record