CVE-2026-46495

CRITICALPre-NVD 9.29.2—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.7%, top 47% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
9.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.2Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.2
EG Score
9.2(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity92% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
53%
KEV
Not listed

Published

June 22, 2026

Last Modified

September 15, 2026

Advisory Details (5)

Auto-updated Sep 15, 2026
Patch available. Sources: github_release, github, github_commit, github_pr.
github Patch Available

OpenDJ 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-fmqx
github_release Patch Available

5.1.1

Patch available: OpenIdentityPlatform/OpenDJ 5.1.1

https://github.com/OpenIdentityPlatform/OpenDJ/releases/tag/5.1.1
github_pr

Fix 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/651
github_commit

commit d4a95c2e37c3 (OpenIdentityPlatform/OpenDJ)

Fix landed in OpenIdentityPlatform/OpenDJ commit d4a95c2e37c3 — awaiting tagged release

https://github.com/OpenIdentityPlatform/OpenDJ/commit/d4a95c2e37c375756f9829c7ec43a4785b99e2e2
github_commit

commit 7e3a75903159 (OpenIdentityPlatform/OpenDJ)

Fix landed in OpenIdentityPlatform/OpenDJ commit 7e3a75903159 — awaiting tagged release

https://github.com/OpenIdentityPlatform/OpenDJ/commit/7e3a75903159153c877daeb2952a552701e38044

Vendor 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.

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.openidentityplatform.opendj:opendj-server-legacy4.10.0 ... 5.1.0 (41 versions)5.1.1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 8× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 11:14 UTCEG score recompute
  3. 2026-09-17 19:31 UTCEPSS rescore
  4. 2026-09-16 14:08 UTCEPSS rescore
  5. 2026-09-15 15:35 UTCEG score recompute
  6. 2026-09-15 15:02 UTCEG score recompute
  7. 2026-09-15 14:18 UTCEG score recompute▲ 9.20
  8. 2026-09-15 14:18 UTCMITRE cvelistV5CVSS v3 → 9.2 · CVSS v4 → 9.2
  9. 2026-08-01 13:12 UTCEG score recompute
  10. 2026-07-26 15:58 UTCEG score recompute
  11. 2026-07-23 03:17 UTCEG score recompute
  12. 2026-06-22 21:39 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-46495?
CVE-2026-46495 is a critical vulnerability published on June 22, 2026. 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…
When was CVE-2026-46495 disclosed?
CVE-2026-46495 was first published in the National Vulnerability Database on June 22, 2026, with the most recent update on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46495 actively exploited?
CVE-2026-46495 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 47.2% of all scored CVEs.
What is the CVSS score of CVE-2026-46495?
CVE-2026-46495 has a CVSS v3 base score of 9.2 (NVD).
How do I remediate CVE-2026-46495?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46495, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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