CVE-2026-47426

HIGHPre-NVD 7.67.6
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This high-severity CVE scores 7.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (44th 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
7.6EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.6Exploit: 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, the private_key_jwt client authentication path uses ClientJwksResolverCache without reliably binding a cached jwks_uri resolver and verified assertion to the expected clientID in ClientCredentialsReader. An attacker controlling any registered client with published keys, including one obtained through open dynamic registration when enabled, can authenticate as another client whose keys are exposed through jwks_uri and mint tokens in that client's name across realms in the same OpenAM process. This issue is fixed in version 16.1.1.

CVSS v3
7.6
EG Score
7.6HIGHmedium confidence
EG Risk
49
EG Risk 49/100

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 (value × EchelonGraph’s weight)
Severity76% × 45%
The EG Score, 7.6 of 10.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
44th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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 29, 2026

Last Modified

September 23, 2026

Advisory Details (3)

Auto-updated Sep 15, 2026
Patch available. Sources: github, github_commit, github_release.
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 91acaf499162 (OpenIdentityPlatform/OpenAM)

Fix landed in OpenIdentityPlatform/OpenAM commit 91acaf499162 — awaiting tagged release

https://github.com/OpenIdentityPlatform/OpenAM/commit/91acaf499162097ec83bcd729275ba7a12e1bd21
GitHub advisoryMentions a patch (unverified)

OpenAM OAuth Client Impersonation via JWKS Resolver Cache · Advisory · OpenIdentityPlatform/OpenAM · GitHub

Affected: version 16.1.1.

https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-f2cx-463q-7m2c

Vendor Advisories for CVE-2026-47426(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-oauth214.5.2 ... 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 12× in last 7d / 34× 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. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  2. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  4. 2026-10-12 16:01 UTCEG score recompute
  5. 2026-10-11 19:44 UTCEG score recompute
  6. 2026-10-11 16:59 UTCEG score recompute
  7. 2026-10-11 14:24 UTCEG score recompute
  8. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  11. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  13. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  14. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  16. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  17. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  18. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  19. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  20. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  21. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  22. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  23. 2026-09-23 19:06 UTCEG score recompute
  24. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  25. 2026-09-23 07:29 UTCEG score recompute
Show 13 more
  1. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  3. 2026-09-18 06:57 UTCEG score recompute
  4. 2026-09-17 14:20 UTCEG score recompute
  5. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  6. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  7. 2026-09-15 10:28 UTCEG score recompute
  8. 2026-09-15 10:03 UTCEG score recomputeFirst assessed: 7.6 HIGH
  9. 2026-09-15 10:02 UTCMITRE cvelistV5CVSS v3 → 7.6 · CVSS v4 → 7.6
  10. 2026-08-01 07:28 UTCEG score recompute
  11. 2026-07-26 14:02 UTCEG score recompute
  12. 2026-07-23 03:17 UTCEG score recompute
  13. 2026-06-29 18:05 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-47426?
CVE-2026-47426 is a high-severity vulnerability; its CVE record was published on June 29, 2026. Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, the privatekeyjwt client authentication path uses ClientJwksResolverCache without reliably binding a cached jwksuri resolver and verified assertion to the expected clientID in ClientCredentialsReader. An attacker…
When was the CVE record for CVE-2026-47426 published?
The CVE record for CVE-2026-47426 was published on June 29, 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-2026-47426 actively exploited?
CVE-2026-47426 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (44th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-47426?
CVE-2026-47426 has a CVSS base score of 7.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-47426?
A fix for CVE-2026-47426 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-47426 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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