CVE-2026-18572

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-08-02. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

Keycloak provides authorization services that allow administrators to restrict access to resources based on time policies (for example, only allowing access during business hours). A flaw was discovered where a user can include a fake time value in their authorization request that overrides the actual server time. This allows the user to bypass these time-based restrictions and access protected resources at unauthorized times.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

August 2, 2026

Last Modified

August 7, 2026

Advisory Details (2)

Auto-updated Aug 2, 2026
Patch available. Sources: redhat.
redhat

2509763 – (CVE-2026-18572) CVE-2026-18572 keycloak-services: keycloak-services: UMA claim token can override authorization time-policy evaluation attributes

https://bugzilla.redhat.com/show_bug.cgi?id=2509763
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-18572

Vendor Advisories for CVE-2026-18572(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 19× in last 7d / 59× 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. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 12:33 UTCEG score recompute
  3. 2026-08-20 12:33 UTCGHSA enrichment
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-19 11:03 UTCEG score recompute
  6. 2026-08-19 11:03 UTCGHSA enrichment
  7. 2026-08-18 13:48 UTCEPSS rescore
  8. 2026-08-18 09:31 UTCEG score recompute
  9. 2026-08-18 09:31 UTCGHSA enrichment
  10. 2026-08-17 13:47 UTCEPSS rescore
  11. 2026-08-17 08:00 UTCEG score recompute
  12. 2026-08-17 08:00 UTCGHSA enrichment
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 06:30 UTCEG score recompute
  15. 2026-08-16 06:30 UTCGHSA enrichment
  16. 2026-08-16 02:14 UTCEPSS rescore
  17. 2026-08-15 05:00 UTCEG score recompute
  18. 2026-08-15 05:00 UTCGHSA enrichment
  19. 2026-08-15 01:30 UTCEPSS rescore
  20. 2026-08-14 03:29 UTCEG score recompute
  21. 2026-08-14 03:29 UTCGHSA enrichment
  22. 2026-08-13 22:00 UTCEPSS rescore
  23. 2026-08-13 01:59 UTCEG score recompute
  24. 2026-08-13 01:59 UTCGHSA enrichment
  25. 2026-08-12 13:50 UTCEPSS rescore
Show 34 more
  1. 2026-08-12 00:29 UTCEG score recompute
  2. 2026-08-12 00:29 UTCGHSA enrichment
  3. 2026-08-11 13:42 UTCEPSS rescore
  4. 2026-08-11 00:00 UTCEPSS rescore
  5. 2026-08-10 22:59 UTCGHSA enrichment
  6. 2026-08-09 21:28 UTCEG score recompute
  7. 2026-08-09 21:28 UTCGHSA enrichment
  8. 2026-08-09 13:46 UTCEPSS rescore
  9. 2026-08-08 19:58 UTCEG score recompute
  10. 2026-08-08 19:58 UTCGHSA enrichment
  11. 2026-08-08 16:37 UTCEPSS rescore
  12. 2026-08-07 18:28 UTCEG score recompute
  13. 2026-08-07 18:28 UTCGHSA enrichment
  14. 2026-08-06 22:11 UTCEG score recompute
  15. 2026-08-06 22:11 UTCGHSA enrichment
  16. 2026-08-06 13:46 UTCEPSS rescore
  17. 2026-08-05 20:41 UTCEG score recompute
  18. 2026-08-05 20:41 UTCGHSA enrichment
  19. 2026-08-05 19:17 UTCEPSS rescore
  20. 2026-08-04 19:11 UTCEG score recompute
  21. 2026-08-04 19:11 UTCGHSA enrichment
  22. 2026-08-04 15:10 UTCEPSS rescore
  23. 2026-08-04 10:38 UTCEPSS rescore
  24. 2026-08-03 17:40 UTCGHSA enrichment
  25. 2026-08-03 16:56 UTCEG score recompute
  26. 2026-08-03 16:56 UTCGHSA enrichment
  27. 2026-08-03 16:19 UTCEG score recompute
  28. 2026-08-03 16:19 UTCGHSA enrichment
  29. 2026-08-03 10:35 UTCEPSS rescore
  30. 2026-08-03 08:08 UTCGHSA enrichment
  31. 2026-08-02 06:36 UTCEG score recompute
  32. 2026-08-02 06:36 UTCGHSA enrichment
  33. 2026-08-02 06:06 UTCEG score recompute
  34. 2026-08-02 06:04 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-18572?
CVE-2026-18572 is a medium vulnerability published on August 2, 2026. Keycloak provides authorization services that allow administrators to restrict access to resources based on time policies (for example, only allowing access during business hours). A flaw was discovered where a user can include a fake time value in their authorization request that overrides the…
When was CVE-2026-18572 disclosed?
CVE-2026-18572 was first published in the National Vulnerability Database on August 2, 2026, with the most recent update on August 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18572 actively exploited?
CVE-2026-18572 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 91.9% of all scored CVEs.
What is the CVSS score of CVE-2026-18572?
CVE-2026-18572 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-18572?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18572, 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-2026-18572

Explore →

Is Your Infrastructure Affected by CVE-2026-18572?

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

Start Free Scan →Browse All CVEs