CVE-2026-7571

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-05-19. a secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
7.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.1Exploit: NoneExposed: 0

A fix is available — apply it.

A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect (OIDC) clients. By manipulating client data during a session restart, an attacker can obtain an access token that should not be available. This vulnerability can also lead to the exposure of these access tokens in server logs, proxy logs, and HTTP Referrer headers, resulting in sensitive information disclosure.

CVSS v3
7.1
EG Score
7.1(medium)
EPSS
26.8%
KEV
Not listed

Published

May 19, 2026

Last Modified

June 3, 2026

Advisory Details (4)

Auto-updated Jun 11, 2026
Patch available. Sources: redhat.
redhat

2464263 – (CVE-2026-7571) CVE-2026-7571 keycloak: Keycloak: Access token disclosure and implicit flow bypass via forged client data

https://bugzilla.redhat.com/show_bug.cgi?id=2464263
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-7571
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:19597
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:19596

Vendor Advisories for CVE-2026-7571(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 / EcosystemFixed in / PatchReleasedSource
redhatrhbk/keycloak-rhel9-operator:26.4-172026-05-20redhat
redhatrhbk/keycloak-rhel9-operator2026-05-20redhat

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.

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.keycloak:keycloak-services1.0-alpha-1 ... 9.0.3 (226 versions)26.6.2—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 42× 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 124 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-7571?
CVE-2026-7571 is a high vulnerability published on May 19, 2026. A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect (OIDC) clients. By manipulating client data during a session restart, an attacker can obtain an access token…
When was CVE-2026-7571 disclosed?
CVE-2026-7571 was first published in the National Vulnerability Database on May 19, 2026, with the most recent update on June 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-7571 actively exploited?
CVE-2026-7571 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 26.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-7571?
CVE-2026-7571 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-7571?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-7571, 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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