CVE-2026-9802

MEDIUMPre-NVD 6.86.8—
EchelonGraph scoreMEDIUM confidence

Score 6.8 from GitHub Security Advisory published 2026-05-28. a secondary CVSS source baseline 6.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.8
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.8Exploit: NoneExposed: 0

A fix is available — apply it.

A flaw was found in Keycloak. When revokeRefreshToken=true is enabled and persistent session storage is in use, a server restart can reset internal timing mechanisms. This allows a remote attacker, who has previously captured a user's refresh token, to replay that token even after it has been revoked. Successful exploitation grants the attacker unauthorized access to the victim's account, potentially leading to information disclosure or privilege escalation.

CVSS v3
6.8
EG Score
6.8(medium)
EPSS
22.4%
KEV
Not listed

Published

May 28, 2026

Last Modified

June 26, 2026

Advisory Details (4)

Auto-updated Jun 12, 2026
Patch available. Sources: redhat.
redhat

2482467 – (CVE-2026-9802) CVE-2026-9802 keycloak: Keycloak: Unauthorized account access via replayed refresh tokens after cluster restart

https://bugzilla.redhat.com/show_bug.cgi?id=2482467
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-9802
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:25098
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:25097

Vendor Advisories for CVE-2026-9802(5)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhbk/keycloak-rhel9-operator:26.4-192026-06-25redhat
redhatrhbk/keycloak-rhel92026-06-25redhat
redhatrhbk/keycloak-rhel9-operator:26.6-62026-06-10redhat

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(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 60× 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 120 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-9802?
CVE-2026-9802 is a medium vulnerability published on May 28, 2026. A flaw was found in Keycloak. When revokeRefreshToken=true is enabled and persistent session storage is in use, a server restart can reset internal timing mechanisms. This allows a remote attacker, who has previously captured a user's refresh token, to replay that token even after it has been…
When was CVE-2026-9802 disclosed?
CVE-2026-9802 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9802 actively exploited?
CVE-2026-9802 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-9802?
CVE-2026-9802 has a CVSS v3 base score of 6.8 (NVD).
How do I remediate CVE-2026-9802?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9802, 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.

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