CVE-2026-73644

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 79% 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
9.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.6Exploit: 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 5.1.2, 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.

CVSS v3
9.6
EG Score
9.6(medium)
EG Risk
43(Track)
EG Risk 43/100SSVC: 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
Severity96% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 18, 2026

Advisory Details (3)

Auto-updated Aug 22, 2026
Patch available. Sources: github_commit, github_release, github.
github Patch Available

OpenDJ SASL PLAIN authzid bypassing the proxy ACI scope check · Advisory · OpenIdentityPlatform/OpenDJ · GitHub

https://github.com/OpenIdentityPlatform/OpenDJ/security/advisories/GHSA-p279-2cqp-84jg
github_release Patch Available

5.1.2

Patch available: OpenIdentityPlatform/OpenDJ 5.1.2

https://github.com/OpenIdentityPlatform/OpenDJ/releases/tag/5.1.2
github_commit

commit 5c326850f1ab (OpenIdentityPlatform/OpenDJ)

Fix landed in OpenIdentityPlatform/OpenDJ commit 5c326850f1ab — awaiting tagged release

https://github.com/OpenIdentityPlatform/OpenDJ/commit/5c326850f1ab945cfca7ac9c5aaf77d1052c6bed

Vendor Advisories for CVE-2026-73644(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 ... 5.1.1 (42 versions)5.1.2—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 30× 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. 2026-08-26 14:47 UTCEPSS rescore
  2. 2026-08-25 13:50 UTCEG score recompute
  3. 2026-08-25 13:49 UTCEPSS rescore
  4. 2026-08-24 17:14 UTCEG score recompute
  5. 2026-08-24 13:07 UTCEG score recompute
  6. 2026-08-23 00:40 UTCEG score recompute
  7. 2026-08-23 00:19 UTCEPSS rescore
  8. 2026-08-22 00:18 UTCEG score recompute
  9. 2026-08-21 23:49 UTCEPSS rescore
  10. 2026-08-20 23:58 UTCEG score recompute
  11. 2026-08-20 22:56 UTCEPSS rescore
  12. 2026-08-19 19:37 UTCEG score recompute
  13. 2026-08-19 17:04 UTCEPSS rescore
  14. 2026-08-18 15:02 UTCEG score recompute
  15. 2026-08-18 13:49 UTCEPSS rescore
  16. 2026-08-18 13:49 UTCEPSS rescore
  17. 2026-08-18 02:21 UTCEG score recompute
  18. 2026-08-18 01:47 UTCEG score recompute
  19. 2026-08-17 15:28 UTCEG score recompute
  20. 2026-08-17 13:47 UTCEPSS rescore
  21. 2026-08-16 15:10 UTCEG score recompute
  22. 2026-08-16 14:56 UTCEPSS rescore
  23. 2026-08-16 14:56 UTCEPSS rescore
  24. 2026-08-16 03:02 UTCEG score recompute
  25. 2026-08-16 02:15 UTCEPSS rescore
Show 5 more
  1. 2026-08-15 02:44 UTCEG score recompute
  2. 2026-08-15 01:31 UTCEPSS rescore
  3. 2026-08-13 18:18 UTCEG score recompute
  4. 2026-08-13 18:12 UTCEG score recompute
  5. 2026-08-13 18:11 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-73644?
CVE-2026-73644 is a critical vulnerability published on August 13, 2026. 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 PROXIEDAUTH privilege but did not evaluate the mayProxy proxy ACI scope when an…
When was CVE-2026-73644 disclosed?
CVE-2026-73644 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73644 actively exploited?
CVE-2026-73644 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 78.5% of all scored CVEs.
What is the CVSS score of CVE-2026-73644?
CVE-2026-73644 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2026-73644?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73644, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-73644

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