CVE-2026-7307

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-19. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.5Exploit: NoneExposed: 0

A fix is available — apply it.

A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language (SAML) endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service (DoS) where the server becomes unavailable.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
50.4%
KEV
Not listed

Published

May 19, 2026

Last Modified

June 30, 2026

Advisory Details (6)

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

2476526 – (CVE-2026-7307) CVE-2026-7307 keycloak: Keycloak: Denial of Service via specially crafted SAML input

https://bugzilla.redhat.com/show_bug.cgi?id=2476526
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-7307
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:19597
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:19596
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:19595
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:19594

Vendor Advisories for CVE-2026-7307(3)

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:26.2-212026-05-20redhat
redhatrhbk/keycloak-rhel92026-05-20redhat
redhatrhbk/keycloak-rhel9-operator:26.4-172026-05-20redhat

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-saml-core1.1.0.Beta1 ... 9.0.3 (207 versions)26.6.2—

Weakness Classification(1)

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

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 14× in last 7d / 81× 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 159 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-7307?
CVE-2026-7307 is a high vulnerability published on May 19, 2026. A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language (SAML) endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service (DoS) where the server…
When was CVE-2026-7307 disclosed?
CVE-2026-7307 was first published in the National Vulnerability Database on May 19, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-7307 actively exploited?
CVE-2026-7307 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 50.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-7307?
CVE-2026-7307 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-7307?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-7307, 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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