CVE-2026-16104

MEDIUMNVD 6.56.5
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.5% (39th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 4.3 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-07-17) is not newer than that change (2026-09-16), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this week

Also known asEUVD-2026-45226 (ENISA EUVD) · GHSA-qh48-wwv4-fmr8 (GitHub Security Advisories)Source: ENISA EUVD

6.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity65% × 45%
Impact severity (EG Severity): CVSS 6.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (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.
EPSS PROB
0.5%
EPSS %ILE
39th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.

EG Severity
6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (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

July 17, 2026

Last Modified

September 16, 2026

Advisory Details (2)

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

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=2501737
Red HatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2026-16104

Vendor Advisories for CVE-2026-16104(3)

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

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrhbk/keycloak-rhel9-operator:26.6-202026-09-16redhat
redhatrhbk-openshift-rhel9/rhbk-openshift-rhel92026-09-16redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 44× 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.

Showing the most recent 100 of 196 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 96 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  2. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  3. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  4. 2026-10-25 14:47 UTCEG score recompute
  5. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  6. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  7. 2026-10-23 06:21 UTCEG score recompute
  8. 2026-10-23 06:21 UTCVendor advisory
  9. 2026-10-23 06:21 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  10. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  11. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  12. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  13. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  14. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  15. 2026-10-18 04:01 UTCEG score recompute
  16. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  17. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  18. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  19. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  20. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  21. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  22. 2026-10-12 16:30 UTCEG score recompute
  23. 2026-10-11 20:09 UTCEG score recompute
  24. 2026-10-11 17:21 UTCEG score recompute
  25. 2026-10-11 14:54 UTCEG score recompute
Show 75 more
  1. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  2. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  3. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  4. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  5. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  6. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  7. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  8. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  9. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  10. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  11. 2026-10-01 10:28 UTCEG score recompute
  12. 2026-10-01 10:28 UTCVendor advisory
  13. 2026-10-01 10:28 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  14. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  15. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  16. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  17. 2026-09-28 07:52 UTCEG score recompute
  18. 2026-09-28 07:52 UTCVendor advisory
  19. 2026-09-28 07:52 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  20. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  21. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  22. 2026-09-24 04:35 UTCEG score recompute
  23. 2026-09-24 04:35 UTCVendor advisory
  24. 2026-09-24 04:35 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  25. 2026-09-23 02:26 UTCEG score recompute
  26. 2026-09-23 02:26 UTCVendor advisory
  27. 2026-09-23 02:26 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  28. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  29. 2026-09-18 04:32 UTCEG score recompute
  30. 2026-09-18 04:32 UTCVendor advisory
  31. 2026-09-18 04:32 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  32. 2026-09-16 19:21 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  33. 2026-09-16 18:41 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  34. 2026-09-16 17:11 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  35. 2026-09-16 15:55 UTCEG score recompute
  36. 2026-09-16 15:55 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  37. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  38. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  39. 2026-09-14 05:51 UTCEG score recompute
  40. 2026-09-14 05:51 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  41. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  42. 2026-09-13 05:15 UTCEG score recompute
  43. 2026-09-13 05:15 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  44. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  45. 2026-09-11 21:06 UTCEG score recompute
  46. 2026-09-11 21:06 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  47. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  48. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  49. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  50. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  51. 2026-09-08 00:00 UTCEG score recompute
  52. 2026-09-08 00:00 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  53. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  54. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  55. 2026-09-05 20:26 UTCEG score recompute
  56. 2026-09-05 20:26 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  57. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  58. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  59. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  60. 2026-08-31 15:39 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  61. 2026-08-31 10:18 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  62. 2026-08-31 03:53 UTCEG score recompute
  63. 2026-08-31 03:53 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  64. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  65. 2026-08-30 03:17 UTCEG score recompute
  66. 2026-08-30 03:17 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  67. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  68. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  69. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  70. 2026-08-27 12:13 UTCEG score recompute
  71. 2026-08-27 12:13 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  72. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  73. 2026-08-26 05:46 UTCEG score recompute
  74. 2026-08-26 05:46 UTCGHSA enrichmentGHSA-qh48-wwv4-fmr8 · GitHub CVSS 4.3
  75. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile

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Frequently asked(5)

What is CVE-2026-16104?
CVE-2026-16104 is a medium-severity vulnerability; its CVE record was 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 made public?
CVE-2026-16104 was made public on July 15, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on July 17, 2026. EchelonGraph's copy of the record carries a last-modified date of September 16, 2026; the record at its source may have been updated since.
Is CVE-2026-16104 actively exploited?
CVE-2026-16104 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (39th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-16104?
CVE-2026-16104 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-16104?
A fix for CVE-2026-16104 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-16104 are linked in the Vendor Advisories panel on this page.

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