CVE-2026-73644: OpenDJ is an LDAPv3 compliant directory service

Q: How do I fix CVE-2026-73644?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Q: Is CVE-2026-73644 being exploited?

CVE-2026-73644 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-73644 affect?

CVE-2026-73644 affects affected software. Severity is critical (CVSS 9.6). OpenDJ is an LDAPv3 compliant directory service. Prior to 5.1.2, the SASL PLAIN authorization identity path in opendj-server-legacy/src/main/java/org/opends/server/extensions/PlainSASLMechanismHandler.java checked the PROXIED_AUTH privilege

Q: How urgent is CVE-2026-73644?

Priority 42/100. Critical severity

This month

CRITICAL 9.6

CVE-2026-73644 is a critical-severity flaw (CVSS 9.6) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OpenDJ is an LDAPv3 compliant directory service. Prior to 5.1.2, the SASL PLAIN authorization identity path in opendj-server-legacy/src/main/java/org/opends/server/extensions/PlainSASLMechanismHandler.java checked the PROXIED_AUTH privilege but did not evaluate the mayProxy proxy ACI scope when an authzid resolved to a different user. Both dn: and u: or bare authzid forms could therefore let an authenticated account holding PROXIED_AUTH assume an

Why this priority

Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score	9.6 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 66%)
CISA exploited list	No
Weakness	CWE-285, CWE-639
Published	2026-08-13
Last modified	2026-10-24

Publisher (CNA): GitHub, Inc.

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-08-13 18:18 UTCPublished CVE record published
2026-10-24 15:10 UTCUpdated Record last modified

Exact fixes by distribution

Maven · org.openidentityplatform.opendj:opendj-server-legacy · FIXED · 5.1.2 · vulnerable: <= 5.1.1 · source

Set org.openidentityplatform.opendj:opendj-server-legacy to 5.1.2 or later in pom.xml or build.gradle, then rebuild and redeploy.

Fedora 46 · wasmedge · FIXED · 0.18.1-1.fc46 · FEDORA-2026-4c27216e39 · source

sudo dnf upgrade --advisory=FEDORA-2026-4c27216e39

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-73644?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-73644 being exploited?

CVE-2026-73644 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-73644 affect?

CVE-2026-73644 affects affected software. Severity is critical (CVSS 9.6). OpenDJ is an LDAPv3 compliant directory service. Prior to 5.1.2, the SASL PLAIN authorization identity path in opendj-server-legacy/src/main/java/org/opends/server/extensions/PlainSASLMechanismHandler.java checked the PROXIED_AUTH privilege

How urgent is CVE-2026-73644?

Priority 42/100. Critical severity

Software pages

Java vulnerabilities

References

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