CVE-2026-45051

CRITICALPre-NVD 9.29.2
EchelonGraph scoreMEDIUM confidence

“—” 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: 0.7% (52nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source

Also known asEUVD-2026-78363 (ENISA EUVD) · GHSA-6c99-87fr-6q7r (GitHub Security Advisories)Source: ENISA EUVD

9.2EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 9.2Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, WebAuthnAuthentication loads a serialized AuthenticatorImpl object graph from the configured userAttribute through loadAuthenticators without an ObjectInputFilter. Exploitation requires the WebAuthn flow to be reachable and an attacker to have previously written controlled data to that attribute through delegated administration, provisioning, directory access, legacy REST self-registration, or unsafe configuration. When those non-default conditions hold, the data is deserialized before assertion verification and can execute a classpath gadget in the application server process. This issue is fixed in version 16.1.1.

CVSS v3
9.2
EG Score
9.2CRITICALmedium confidence
EG Risk
42
EG 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.
Exploitation0.7% × 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
0.7%
EPSS %ILE
52nd
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
0.7% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-26). 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: 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.

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 24, 2026

Last Modified

September 23, 2026

Advisory Details (3)

Auto-updated Sep 15, 2026
Patch available. Sources: github_release, github, github_commit.
GitHub advisoryMentions a patch (unverified)

OpenAM Conditional RCE via Java Deserialization in WebAuthn · Advisory · OpenIdentityPlatform/OpenAM · GitHub

Affected: version 16.1.1.

https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-6c99-87fr-6q7r
GitHub release Patch Available

16.1.1

Patch available: OpenIdentityPlatform/OpenAM 16.1.1

https://github.com/OpenIdentityPlatform/OpenAM/releases/tag/16.1.1
GitHub commit

commit 8b02328d36bc (OpenIdentityPlatform/OpenAM)

Fix landed in OpenIdentityPlatform/OpenAM commit 8b02328d36bc — awaiting tagged release

https://github.com/OpenIdentityPlatform/OpenAM/commit/8b02328d36bc9cd40602128a6d399d1eda9e6753

Vendor Advisories for CVE-2026-45051(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 rangeFix by version rangeDependents
org.openidentityplatform.openam:openam-auth-webauthn14.5.2 ... 16.1.0 (40 versions)
  • every version up to 16.1.1: fixed in 16.1.1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 47× 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.

  1. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  2. 2026-10-26 17:55 UTCEG score recompute
  3. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  4. 2026-10-25 19:20 UTCEG score recompute
  5. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  6. 2026-10-25 14:27 UTCEG score recompute
  7. 2026-10-24 21:16 UTCEG score recompute
  8. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  9. 2026-10-23 23:14 UTCEG score recompute
  10. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  11. 2026-10-23 00:49 UTCEG score recompute
  12. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  13. 2026-10-22 01:57 UTCEG score recompute
  14. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  15. 2026-10-21 03:51 UTCEG score recompute
  16. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  17. 2026-10-20 05:46 UTCEG score recompute
  18. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  19. 2026-10-19 07:22 UTCEG score recompute
  20. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  21. 2026-10-18 03:38 UTCEG score recompute
  22. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  23. 2026-10-17 06:18 UTCEG score recompute
  24. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  25. 2026-10-16 07:35 UTCEG score recompute
Show 42 more
  1. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  2. 2026-10-15 06:29 UTCEG score recompute
  3. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  4. 2026-10-14 02:09 UTCEG score recompute
  5. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  6. 2026-10-12 22:30 UTCEG score recompute
  7. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  8. 2026-10-12 16:04 UTCEG score recompute
  9. 2026-10-11 19:47 UTCEG score recompute
  10. 2026-10-11 17:01 UTCEG score recompute
  11. 2026-10-11 14:26 UTCEG score recompute
  12. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  13. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  14. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  15. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  16. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  17. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  18. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  19. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  20. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  21. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  22. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  23. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  24. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  25. 2026-09-23 19:06 UTCEG score recompute
  26. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  27. 2026-09-23 09:53 UTCEG score recompute
  28. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  29. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  30. 2026-09-18 07:49 UTCEG score recompute
  31. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  32. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  33. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  34. 2026-09-15 14:37 UTCEG score recompute
  35. 2026-09-15 13:58 UTCEG score recompute
  36. 2026-09-15 10:28 UTCEG score recompute
  37. 2026-09-15 09:58 UTCEG score recomputeFirst assessed: 9.2 CRITICAL
  38. 2026-09-15 09:57 UTCMITRE cvelistV5CVSS v3 → 9.2 · CVSS v4 → 9.2
  39. 2026-08-01 15:44 UTCEG score recompute
  40. 2026-07-26 15:26 UTCEG score recompute
  41. 2026-07-23 03:16 UTCEG score recompute
  42. 2026-06-24 18:02 UTCEG score recompute

Related CVEs(same product + same CWE)

Same product

1 shown

Maven:org.openidentityplatform.openam:openam-auth-webauthn

Frequently asked(5)

What is CVE-2026-45051?
CVE-2026-45051 is a critical-severity vulnerability; its CVE record was published on June 24, 2026. Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, WebAuthnAuthentication loads a serialized AuthenticatorImpl object graph from the configured userAttribute through loadAuthenticators without an ObjectInputFilter. Exploitation requires the WebAuthn flow to be…
When was the CVE record for CVE-2026-45051 published?
The CVE record for CVE-2026-45051 was published on June 24, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 23, 2026; the record at its source may have been updated since.
Is CVE-2026-45051 actively exploited?
CVE-2026-45051 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (52nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-45051?
CVE-2026-45051 has a CVSS base score of 9.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-45051?
A fix for CVE-2026-45051 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-45051 are linked in the Vendor Advisories panel on this page.

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