CVE-2026-16089

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH confidence

Score 5.4 from GitHub Security Advisory published 2026-07-17. a secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
5.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.4Exploit: NoneExposed: 0

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

A flaw was found in the keycloak-services component of Red Hat Build of Keycloak. The issue occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. An attacker who can intercept an authorization code can modify it to be redeemed by their own client, potentially allowing them to obtain access tokens for a victim's identity.

CVSS v3
5.4
EG Score
5.4(high)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
5.0%
KEV
Not listed

Published

July 17, 2026

Last Modified

July 22, 2026

Advisory Details (2)

Auto-updated Jul 17, 2026
Patch available. Sources: redhat.
redhat

2501724 – (CVE-2026-16089) CVE-2026-16089 keycloak-services: keycloak-services: Authorization codes can be retargeted to another client session

https://bugzilla.redhat.com/show_bug.cgi?id=2501724
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-16089

Vendor Advisories for CVE-2026-16089(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 645× in last 7d / 645× 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.

Showing the most recent 100 of 645 total refreshes for this CVE.

  1. 2026-07-23 03:05 UTCEG score recompute
  2. 2026-07-23 00:16 UTCEG score recompute
  3. 2026-07-23 00:16 UTCGHSA enrichment
  4. 2026-07-22 14:08 UTCEPSS rescore
  5. 2026-07-21 15:24 UTCEPSS rescore
  6. 2026-07-20 17:08 UTCEPSS rescore
  7. 2026-07-19 14:30 UTCEPSS rescore
  8. 2026-07-19 02:30 UTCEG score recompute
  9. 2026-07-19 02:30 UTCGHSA enrichment
  10. 2026-07-19 02:28 UTCEPSS rescore
  11. 2026-07-19 02:27 UTCGHSA enrichment
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  1. 2026-07-19 01:45 UTCGHSA enrichment
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  31. 2026-07-18 23:56 UTCGHSA enrichment
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  75. 2026-07-18 22:26 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-16089?
CVE-2026-16089 is a medium vulnerability published on July 17, 2026. A flaw was found in the keycloak-services component of Red Hat Build of Keycloak. The issue occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. An attacker who can intercept an authorization code can modify it to be redeemed by their own…
When was CVE-2026-16089 disclosed?
CVE-2026-16089 was first published in the National Vulnerability Database on July 17, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16089 actively exploited?
CVE-2026-16089 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-16089?
CVE-2026-16089 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-16089?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16089, 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

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