A flaw was found in the authentication configuration endpoint of the keycloak-services component, which is the core engine for Red Hat Build of Keycloak identity and access management. The issue occurs because the system fails to mask sensitive configuration values, such as reCAPTCHA secret keys, when they are requested by administrators with view-only permissions. This can lead to the exposure of third-party service credentials to unauthorized personnel or through administrative logs.
CVE-2026-16104
MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence
Score 4.3 from GitHub Security Advisory published 2026-07-17. a secondary CVSS source baseline 4.3; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
4.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.3Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.3
- EG Score
- 4.3(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 computedSeverity43% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 10.6%
- KEV
- Not listed
Published
July 17, 2026
Last Modified
July 17, 2026
Advisory Details (2)
Auto-updated Jul 17, 2026Patch available. Sources: redhat.
redhat
2501737 – (CVE-2026-16104) CVE-2026-16104 keycloak-services: keycloak-services: Authenticator config endpoint exposes raw reCAPTCHA secrets to view-only admins
https://bugzilla.redhat.com/show_bug.cgi?id=2501737Vendor Advisories for CVE-2026-16104(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 9× in last 7d / 13× 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.
- 2026-07-25 14:17 UTCEPSS rescore
- 2026-07-24 14:17 UTCEPSS rescore
- 2026-07-23 14:18 UTCEPSS rescore
- 2026-07-23 03:05 UTCEG score recompute
- 2026-07-22 14:08 UTCEPSS rescore
- 2026-07-21 15:24 UTCEPSS rescore
- 2026-07-20 17:08 UTCEPSS rescore
- 2026-07-19 14:30 UTCEPSS rescore
- 2026-07-19 02:28 UTCEPSS rescore
- 2026-07-17 18:33 UTCEG score recompute
- 2026-07-17 18:32 UTCGHSA enrichment
- 2026-07-17 16:46 UTCEG score recompute
- 2026-07-17 16:44 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-522
- CVE-2013-7055EG 9.8EPSS 93%CRITICAL
- CVE-2013-7052EG 9.8EPSS 98%CRITICAL
- CVE-2014-3445EG 9.8EPSS 92%CRITICAL
- CVE-2014-5381EG 9.8EPSS 94%CRITICAL
- CVE-2014-5093EG 9.8CRITICAL
- CVE-2016-4401EG 9.8CRITICAL
- CVE-2018-1000627EG 9.8CRITICAL
- CVE-2018-11742EG 9.8EPSS 96%CRITICAL
- CVE-2018-1000851EG 9.8CRITICAL
- CVE-2018-10824EG 9.8EPSS 96%CRITICAL
Frequently asked(5)
What is CVE-2026-16104?
CVE-2026-16104 is a medium vulnerability published on July 17, 2026. A flaw was found in the authentication configuration endpoint of the keycloak-services component, which is the core engine for Red Hat Build of Keycloak identity and access management. The issue occurs because the system fails to mask sensitive configuration values, such as reCAPTCHA secret keys,…
When was CVE-2026-16104 disclosed?
CVE-2026-16104 was first published in the National Vulnerability Database on July 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16104 actively exploited?
CVE-2026-16104 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-16104?
CVE-2026-16104 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-16104?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16104, 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-2026-16104
Is Your Infrastructure Affected by CVE-2026-16104?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.