CVE-2026-47426

HIGHPre-NVD 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: —CVSS: —Exploit: NoneExposed: 0

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

OpenAM OAuth Client Impersonation via JWKS Resolver Cache

Summary

Description

An Improper Authentication (CWE-287) issue in OpenAM's OAuth2 private_key_jwt client authentication path allows any registered OAuth2 client to mint tokens in the name of any other client whose key is published via a jwks_uri, without knowing the victim's signing key. This affects OpenAM Community Edition through version 16.0.6 and was patched in version 16.1.1.

Impact

OpenAM Community Edition deployments through version 16.0.6 that have OAuth2 clients configured for private_key_jwt authentication with keys published via jwks_uri are potentially affected. An attacker holding any such client registration, their own, or one obtained through open dynamic client registration where enabled, can mint access tokens in any other such client's name, in any realm hosted by the OpenAM process.

Patch

This has been patched in OpenAM Community Edition version 16.1.1. Users are encouraged to update to the latest release.

CVSS v3
—
EG Score
0.0(none)
EPSS
—
KEV
Not listed

Published

June 29, 2026

Last Modified

June 29, 2026

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.

Data Freshness Timeline

(refreshed 0× in last 7d / 1× 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. 2026-06-29 18:05 UTCEG score recompute

Frequently asked(3)

What is CVE-2026-47426?
CVE-2026-47426 is a high vulnerability published on June 29, 2026. OpenAM OAuth Client Impersonation via JWKS Resolver Cache Summary Description An Improper Authentication (CWE-287) issue in OpenAM's OAuth2 privatekeyjwt client authentication path allows any registered OAuth2 client to mint tokens in the name of any other client whose key is published via a…
When was CVE-2026-47426 disclosed?
CVE-2026-47426 was first published in the National Vulnerability Database on June 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
How do I remediate CVE-2026-47426?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47426, 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

Explore the affected products and dependency analysis for CVE-2026-47426

Explore →

Is Your Infrastructure Affected by CVE-2026-47426?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs