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VulnerabilityPublished Updated

CVE-2026-73644: OpenIdentityPlatform OpenDJ · Improper Authorization

Affects OpenIdentityPlatform OpenDJSource CVE Database V5

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Not known to be exploited · CVSS 9.6 Critical : upgrade to 5.1.2 as a priority.

Data as of 12 Nov 2026, 23:24 UTC

CVSS 3.1 base score
9.6Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 36% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 5.1.2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Upgrade OpenDJ and openidentityplatform/OpenDJ to 5.1.2.

Affected software

ProductAffectedFixed in
OpenIdentityPlatformOpenDJAffected
  • <5.1.2
Fixed in
  • 5.1.2
GitHubopenidentityplatform/OpenDJpkg:github/openidentityplatform/OpenDJOther threatsAffected
  • <5.1.2
Fixed in
  • 5.1.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade OpenDJ to version 5.1.2 or later, where the vulnerability is fixed by proper evaluation of proxy ACI scope and rejection of unauthorized authorization identities before password verification. No other mitigation is indicated or required.

Description

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.

References

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