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.
CVE-2026-46495
“—” beside the score: it is equal to the CVSS score beside it.
This critical-severity CVE scores 9.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 1.1% (66th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Also known asEUVD-2026-78579 (ENISA EUVD) · GHSA-43x2-g84q-fmqx (GitHub Security Advisories)Source: ENISA EUVD
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 9.2
- EG Score
- 9.2CRITICALmedium confidence
- EG Risk
- 42EG Risk 42/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity92% × 45%Impact severity (EG Severity): CVSS 9.2 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation1.1% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 1.1%
- EPSS %ILE
- 66th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (9.2): severity, escalated by confirmed exploitation. This CVE's 9.2 is its impact severity (EG Severity), not escalated.
- EG Severity
- 9.2 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
- EG Likelihood
- 1.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
June 22, 2026
Last Modified
September 25, 2026
Advisory Details (5)
Auto-updated Sep 15, 2026OpenDJ Unauthenticated RCE via Java Deserialization in JMX RMI · Advisory · OpenIdentityPlatform/OpenDJ · GitHub
Affected: version 5.1.1.
https://github.com/OpenIdentityPlatform/OpenDJ/security/advisories/GHSA-43x2-g84q-fmqx5.1.1
Patch available: OpenIdentityPlatform/OpenDJ 5.1.1
https://github.com/OpenIdentityPlatform/OpenDJ/releases/tag/5.1.1Fix JMX RMI connector startup failure introduced by CVE-2026-46495 hardening
Fix merged in OpenIdentityPlatform/OpenDJ PR #651 on 2026-06-11 — awaiting tagged release
https://github.com/OpenIdentityPlatform/OpenDJ/pull/651commit d4a95c2e37c3 (OpenIdentityPlatform/OpenDJ)
Fix landed in OpenIdentityPlatform/OpenDJ commit d4a95c2e37c3 — awaiting tagged release
https://github.com/OpenIdentityPlatform/OpenDJ/commit/d4a95c2e37c375756f9829c7ec43a4785b99e2e2commit 7e3a75903159 (OpenIdentityPlatform/OpenDJ)
Fix landed in OpenIdentityPlatform/OpenDJ commit 7e3a75903159 — awaiting tagged release
https://github.com/OpenIdentityPlatform/OpenDJ/commit/7e3a75903159153c877daeb2952a552701e38044Vendor Advisories for CVE-2026-46495(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(1)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| maven | org.openidentityplatform.opendj:opendj-server-legacy @ 5.1.1 (fixes <= 5.1.0) | — | ghsa |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
Maven(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| org.openidentityplatform.opendj:opendj-server-legacy | 4.10.0 ... 5.1.0 (41 versions) |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 15× in last 7d / 56× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
- 2026-11-01 16:34 UTCEPSS rescoreEPSS 1.1% · 66th percentile
- 2026-11-01 15:44 UTCGHSA enrichmentGHSA-43x2-g84q-fmqx · GitHub severity CRITICAL
- 2026-11-01 07:48 UTCGHSA enrichmentGHSA-43x2-g84q-fmqx · GitHub severity CRITICAL
- 2026-11-01 07:48 UTCEG score recompute
- 2026-10-31 16:32 UTCEPSS rescoreEPSS 1.1% · 66th percentile
- 2026-10-31 13:56 UTCEG score recompute
- 2026-10-30 16:34 UTCEPSS rescoreEPSS 1.1% · 66th percentile
- 2026-10-30 12:08 UTCEG score recompute
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 1.1% · 66th percentile
- 2026-10-29 10:19 UTCEG score recompute
- 2026-10-28 16:32 UTCEPSS rescoreEPSS 1.1% · 66th percentile
- 2026-10-28 08:32 UTCEG score recompute
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 1.1% · 66th percentile
- 2026-10-27 06:23 UTCEG score recompute
- 2026-10-26 16:31 UTCEPSS rescoreEPSS 1.1% · 66th percentile
- 2026-10-26 00:36 UTCEG score recompute
- 2026-10-25 16:33 UTCEPSS rescoreEPSS 1.1% · 66th percentile
- 2026-10-25 14:25 UTCEG score recompute
- 2026-10-24 22:44 UTCEG score recompute
- 2026-10-24 16:33 UTCEPSS rescoreEPSS 1.1% · 66th percentile
- 2026-10-23 20:57 UTCEG score recompute
- 2026-10-23 16:31 UTCEPSS rescoreEPSS 1.1% · 66th percentile
- 2026-10-22 19:09 UTCEG score recompute
- 2026-10-22 16:34 UTCEPSS rescoreEPSS 1.1% · 66th percentile
- 2026-10-21 17:19 UTCEG score recompute
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- 2026-10-21 16:33 UTCEPSS rescoreEPSS 1.1% · 66th percentile
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-20 15:31 UTCEG score recompute
- 2026-10-19 16:32 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-19 13:42 UTCEG score recompute
- 2026-10-18 16:32 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-18 03:37 UTCEG score recompute
- 2026-10-17 16:34 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-17 10:05 UTCEG score recompute
- 2026-10-16 16:42 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-16 08:16 UTCEG score recompute
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-15 06:27 UTCEG score recompute
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-14 02:07 UTCEG score recompute
- 2026-10-13 16:34 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-12 22:25 UTCEG score recompute
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-12 16:02 UTCEG score recompute
- 2026-10-11 19:45 UTCEG score recompute
- 2026-10-11 17:00 UTCEG score recompute
- 2026-10-11 14:25 UTCEG score recompute
- 2026-10-11 13:48 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-08 17:12 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-05 17:43 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-03 14:25 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-09-28 13:51 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-09-26 15:59 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-09-26 00:27 UTCEPSS rescoreEPSS 1.1% · 65th percentile
- 2026-09-25 14:42 UTCEG score recompute
- 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-09-18 11:14 UTCEG score recompute
- 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-09-15 15:35 UTCEG score recompute
- 2026-09-15 15:02 UTCEG score recompute
- 2026-09-15 14:18 UTCEG score recomputeFirst assessed: 9.2 CRITICAL
- 2026-09-15 14:18 UTCMITRE cvelistV5CVSS v3 → 9.2 · CVSS v4 → 9.2
- 2026-08-01 13:12 UTCEG score recompute
- 2026-07-26 15:58 UTCEG score recompute
- 2026-07-23 03:17 UTCEG score recompute
- 2026-06-22 21:39 UTCEG score recompute
Related CVEs(same product + same CWE)
Same product
2 shownMaven:org.openidentityplatform.opendj:opendj-server-legacy
Frequently asked(5)
What is CVE-2026-46495?
When was the CVE record for CVE-2026-46495 published?
Is CVE-2026-46495 actively exploited?
What is the CVSS score of CVE-2026-46495?
How do I remediate CVE-2026-46495?
Dependency Blast Radius
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