CVE-2026-18569

LOWPre-NVD 3.73.7—
EchelonGraph scoreMEDIUM confidence

Score 3.7 from GitHub Security Advisory (severity: LOW) published 2026-08-04. The CNA's CVSS baseline 3.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:redhat, epss, ghsa
Trending — 3 sources updated this week
3.7EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 3.7Exploit: None knownExposed services: Not assessed

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

A flaw was found in the backchannel logout endpoint of the keycloak-services component, which is part of the Red Hat Build of Keycloak. This component handles authentication and session management for applications. The issue occurs when an OIDC identity provider is configured to skip signature validation. In this specific setup, the system incorrectly accepts logout requests that have no cryptographic signature. An attacker who knows certain technical details about a user's session can use this flaw to force that user to be logged out, potentially disrupting their work.

CVSS v3
3.7
EG Score
3.7LOWmedium confidence
EG Risk
17
EG Risk 17/100CISA SSVC

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
Severity37% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
14th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 4, 2026

Last Modified

August 31, 2026

References (2)

Vendor Advisories for CVE-2026-18569(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 / 38× 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. 2026-10-04 23:21 UTCEPSS rescore
  2. 2026-10-04 06:15 UTCEG score recompute
  3. 2026-10-04 06:15 UTCGHSA enrichment
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-01 19:49 UTCEPSS rescore
  6. 2026-10-01 02:29 UTCEG score recompute
  7. 2026-10-01 02:29 UTCGHSA enrichment
  8. 2026-09-30 15:02 UTCEPSS rescore
  9. 2026-09-29 15:20 UTCEPSS rescore
  10. 2026-09-28 13:51 UTCEPSS rescore
  11. 2026-09-27 18:08 UTCEG score recompute
  12. 2026-09-27 18:08 UTCGHSA enrichment
  13. 2026-09-27 13:47 UTCEPSS rescore
  14. 2026-09-26 15:58 UTCEPSS rescore
  15. 2026-09-23 16:15 UTCEG score recompute
  16. 2026-09-23 16:15 UTCGHSA enrichment
  17. 2026-09-20 20:54 UTCEG score recompute
  18. 2026-09-20 20:54 UTCGHSA enrichment
  19. 2026-09-18 19:27 UTCEPSS rescore
  20. 2026-09-18 01:10 UTCEG score recompute
  21. 2026-09-18 01:10 UTCGHSA enrichment
  22. 2026-09-16 14:07 UTCEPSS rescore
  23. 2026-09-16 05:14 UTCEPSS rescore
  24. 2026-09-15 01:43 UTCEG score recompute
  25. 2026-09-15 01:43 UTCGHSA enrichment
Show 71 more
  1. 2026-09-13 16:46 UTCEPSS rescore
  2. 2026-09-12 15:00 UTCEPSS rescore
  3. 2026-09-12 01:06 UTCEG score recompute
  4. 2026-09-12 01:06 UTCGHSA enrichment
  5. 2026-09-11 09:36 UTCEPSS rescore
  6. 2026-09-10 09:34 UTCEPSS rescore
  7. 2026-09-09 06:41 UTCEG score recompute
  8. 2026-09-09 06:40 UTCGHSA enrichment
  9. 2026-09-08 22:00 UTCEPSS rescore
  10. 2026-09-07 16:01 UTCEPSS rescore
  11. 2026-09-06 13:47 UTCEPSS rescore
  12. 2026-09-06 11:58 UTCEG score recompute
  13. 2026-09-06 11:58 UTCGHSA enrichment
  14. 2026-09-04 05:06 UTCEPSS rescore
  15. 2026-09-03 17:33 UTCEG score recompute
  16. 2026-09-03 17:33 UTCGHSA enrichment
  17. 2026-09-02 14:11 UTCEPSS rescore
  18. 2026-09-01 13:53 UTCEPSS rescore
  19. 2026-09-01 04:39 UTCEPSS rescore
  20. 2026-08-31 15:39 UTCEG score recompute
  21. 2026-08-31 15:39 UTCGHSA enrichment
  22. 2026-08-30 19:17 UTCEPSS rescore
  23. 2026-08-30 04:44 UTCEG score recompute
  24. 2026-08-30 04:44 UTCGHSA enrichment
  25. 2026-08-30 01:22 UTCEPSS rescore
  26. 2026-08-28 21:41 UTCEPSS rescore
  27. 2026-08-27 14:25 UTCEPSS rescore
  28. 2026-08-27 10:19 UTCEG score recompute
  29. 2026-08-27 10:19 UTCGHSA enrichment
  30. 2026-08-26 14:46 UTCEPSS rescore
  31. 2026-08-25 13:48 UTCEPSS rescore
  32. 2026-08-24 15:52 UTCEG score recompute
  33. 2026-08-24 15:52 UTCGHSA enrichment
  34. 2026-08-23 00:19 UTCEPSS rescore
  35. 2026-08-21 23:49 UTCEPSS rescore
  36. 2026-08-21 21:28 UTCEG score recompute
  37. 2026-08-21 21:28 UTCGHSA enrichment
  38. 2026-08-19 17:03 UTCEPSS rescore
  39. 2026-08-19 03:03 UTCEG score recompute
  40. 2026-08-19 03:02 UTCGHSA enrichment
  41. 2026-08-18 13:48 UTCEPSS rescore
  42. 2026-08-17 13:47 UTCEPSS rescore
  43. 2026-08-16 14:56 UTCEPSS rescore
  44. 2026-08-16 08:05 UTCEG score recompute
  45. 2026-08-16 08:05 UTCGHSA enrichment
  46. 2026-08-16 02:14 UTCEPSS rescore
  47. 2026-08-15 01:30 UTCEPSS rescore
  48. 2026-08-13 22:00 UTCEPSS rescore
  49. 2026-08-13 13:40 UTCEG score recompute
  50. 2026-08-13 13:40 UTCGHSA enrichment
  51. 2026-08-12 13:50 UTCEPSS rescore
  52. 2026-08-11 13:42 UTCEPSS rescore
  53. 2026-08-11 00:00 UTCEPSS rescore
  54. 2026-08-10 19:10 UTCEG score recompute
  55. 2026-08-10 19:10 UTCGHSA enrichment
  56. 2026-08-09 13:46 UTCEPSS rescore
  57. 2026-08-09 10:15 UTCEG score recompute
  58. 2026-08-09 10:15 UTCGHSA enrichment
  59. 2026-08-08 16:37 UTCEPSS rescore
  60. 2026-08-06 15:50 UTCEG score recompute
  61. 2026-08-06 15:50 UTCGHSA enrichment
  62. 2026-08-06 13:46 UTCEPSS rescore
  63. 2026-08-05 19:17 UTCEPSS rescore
  64. 2026-08-04 15:20 UTCEG score recompute
  65. 2026-08-04 15:20 UTCGHSA enrichment
  66. 2026-08-04 15:10 UTCEPSS rescore
  67. 2026-08-04 14:48 UTCEG score recompute
  68. 2026-08-04 14:48 UTCGHSA enrichment
  69. 2026-08-04 06:30 UTCEG score recompute
  70. 2026-08-04 05:38 UTCEG score recompute
  71. 2026-08-04 05:38 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-18569?
CVE-2026-18569 is a low vulnerability published on August 4, 2026. A flaw was found in the backchannel logout endpoint of the keycloak-services component, which is part of the Red Hat Build of Keycloak. This component handles authentication and session management for applications. The issue occurs when an OIDC identity provider is configured to skip signature…
When was CVE-2026-18569 disclosed?
CVE-2026-18569 was first published on August 4, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18569 actively exploited?
CVE-2026-18569 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (14th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18569?
CVE-2026-18569 has a CVSS base score of 3.7 (the CNA's own assessment, by redhat; NVD's own analysis pending).
How do I remediate CVE-2026-18569?
No fix for CVE-2026-18569 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-18569 are linked in the Vendor Advisories panel on this page.

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