CVE-2026-85511

MEDIUMPre-NVD 4.24.2—
EchelonGraph scoreHIGH confidence

Score 4.2 from GitHub Security Advisory published 2026-09-18. a secondary CVSS source baseline 4.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.2EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.2Exploit: None knownExposed: 0

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

A flaw was found in EAP's Elytron. An EAP application whose security domain is backed by an Elytron token-realm with oauth2-introspection would allow parameter substitution due to missing URL encoding.

CVSS v3
4.2
EG Score
4.2(high)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity42% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

September 18, 2026

Last Modified

September 18, 2026

Advisory Details (2)

Auto-updated Sep 18, 2026
Patch available. Sources: redhat.
redhat

2483140 – (CVE-2026-85511) CVE-2026-85511 wildfly-elytron-realm-token: parameter injection in EAP's elytron oauth2

https://bugzilla.redhat.com/show_bug.cgi?id=2483140
redhat Patch Available

CVE-2026-85511 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-85511

Vendor Advisories for CVE-2026-85511(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 10× 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. 2026-09-19 20:35 UTCEG score recompute
  2. 2026-09-19 20:35 UTCGHSA enrichment
  3. 2026-09-18 19:07 UTCGHSA enrichment
  4. 2026-09-18 17:26 UTCEG score recompute
  5. 2026-09-18 17:26 UTCGHSA enrichment
  6. 2026-09-18 16:49 UTCEG score recompute
  7. 2026-09-18 16:49 UTCGHSA enrichment
  8. 2026-09-18 15:24 UTCEG score recompute
  9. 2026-09-18 14:34 UTCEG score recompute
  10. 2026-09-18 14:34 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-85511?
CVE-2026-85511 is a medium vulnerability published on September 18, 2026. A flaw was found in EAP's Elytron. An EAP application whose security domain is backed by an Elytron token-realm with oauth2-introspection would allow parameter substitution due to missing URL encoding.
When was CVE-2026-85511 disclosed?
CVE-2026-85511 was first published in the National Vulnerability Database on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85511 actively exploited?
CVE-2026-85511 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 96.9% of all scored CVEs.
What is the CVSS score of CVE-2026-85511?
CVE-2026-85511 has a CVSS v3 base score of 4.2 (NVD).
How do I remediate CVE-2026-85511?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85511, 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-2026-85511

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