CVE-2026-73644Critical· 9.6▾ Midnight

OpenDJ is an LDAPv3 compliant directory service

▾ Midnight zone — Critical, or high with PoC / in-the-wild

Depth score53/ 100 · Moderate

impact 52.8 · likelihood 0.1 · exploitation 0

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Proof of concept

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Published

Aug 13, 2026

Updated

Sep 18, 2026

CVSS

9.6

Vendor

—

Product

—

CWE

CWE-285, CWE-639

Depth score

53 · Moderate

EPSS

0.41% · p35

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

EPSS history

Exploit-prediction probability, daily snapshots since Sep 18.

0.3% → 0.4%▲ 0.1%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

4 events · 43 days

Aug 13, 2026Published
Disclosed via NVD
Sep 18, 2026Record revised
Last analysed / modified upstream
Sep 18, 2026EPSS first tracked
0.3%
Sep 25, 2026EPSS peak
0.3% → 0.4%

CWE-285 CWE-639 #nvd

Full technical detail▾

Overview

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 any resolvable non-root identity outside the identities permitted by its proxy ACI. The fix returns INVALID_CREDENTIALS (49) before password verification when the target authorization identity is not permitted. This issue is fixed in version 5.1.2.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd

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