CVE-2026-15573

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-05. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in Keycloak's Authorization Services. The component responsible for matching request paths to security policies (PathMatcher) does not properly normalize URIs before comparison. By adding extra characters like a trailing slash or matrix parameters to a URL, an attacker can trick the system into applying a less restrictive security policy than intended. This allows an authenticated user to access administrative or restricted areas they should not have permission to see.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 20, 2026

Advisory Details (2)

Auto-updated Aug 5, 2026
Patch available. Sources: redhat.
redhat

2499593 – (CVE-2026-15573) CVE-2026-15573 keycloak-services: keycloak-services: Authorization bypass via unnormalized URI matching in PathMatcher

https://bugzilla.redhat.com/show_bug.cgi?id=2499593
redhat Patch Available

CVE-2026-15573 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-15573

Vendor Advisories for CVE-2026-15573(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:26.6-112026-08-05redhat
redhatrhbk-openshift-rhel9/rhbk-openshift-rhel92026-08-05redhat
redhatrhbk/keycloak-rhel9-operator:26.4-222026-08-05redhat

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 46× in last 7d / 106× 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 106 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-15573?
CVE-2026-15573 is a high vulnerability published on August 5, 2026. A flaw was found in Keycloak's Authorization Services. The component responsible for matching request paths to security policies (PathMatcher) does not properly normalize URIs before comparison. By adding extra characters like a trailing slash or matrix parameters to a URL, an attacker can trick…
When was CVE-2026-15573 disclosed?
CVE-2026-15573 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15573 actively exploited?
CVE-2026-15573 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 78.4% of all scored CVEs.
What is the CVSS score of CVE-2026-15573?
CVE-2026-15573 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-15573?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15573, 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

Explore the affected products and dependency analysis for CVE-2026-15573

Explore →

Is Your Infrastructure Affected by CVE-2026-15573?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs