CVE-2026-46495
OpenDJ Pre-Auth RCE via Java Deserialization in JMX RMI
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
OpenDJ is an LDAPv3 compliant directory service. Prior to 5.1.1, the JMX RMI connector in opendj-server-legacy/src/main/java/org/opends/server/protocols/jmx/RmiConnector.java processes attacker-controlled credential objects before authentication without a restrictive jmx.remote.rmi.server.credentials.filter.pattern, and RmiAuthenticator.authenticate in opendj-server-legacy/src/main/java/org/opends/server/protocols/jmx/RmiAuthenticator.java accepts an unconstrained Object array rather than a two-element String[]. When the JMX Connection Handler is enabled and its TCP listener is reachable, an unauthenticated remote attacker can submit a crafted serialized Java object and achieve code execution in the OpenDJ server process. The handler is disabled by default, and successful exploitation depends on the runtime classpath and Java version; remote code execution was demonstrated against OpenDJ 4.4.15 on JDK 11 with Jackson 2.12.6.1. This issue is fixed in 5.1.1.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 4.0 | Critical9.2 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| NVDNVD · Awaiting Analysis | 4.0 | Critical9.2 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 1.1% · top 33% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.2.
Weakness
Affected products
- affected < 5.1.1
org.openidentityplatform.opendj · opendj-server-legacy
- affected < 5.1.1
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.openidentityplatform.opendj:opendj-server-legacyGHSA-43x2-g84q-fmqx (opens in a new tab)
References (5)
- https://github.com/OpenIdentityPlatform/OpenDJ/security/advisories/GHSA-43x2-g84q-fmqx (opens in a new tab)x_refsource_CONFIRM
- https://github.com/OpenIdentityPlatform/OpenDJ/pull/651 (opens in a new tab)x_refsource_MISC
- https://github.com/OpenIdentityPlatform/OpenDJ/commit/7e3a75903159153c877daeb2952a552701e38044 (opens in a new tab)x_refsource_MISC
- https://github.com/OpenIdentityPlatform/OpenDJ/commit/d4a95c2e37c375756f9829c7ec43a4785b99e2e2 (opens in a new tab)x_refsource_MISC
- https://github.com/OpenIdentityPlatform/OpenDJ/releases/tag/5.1.1 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-43x2-g84q-fmqx (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-46495)Record last updated .