CVE-2026-18967

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.2% (12th percentile of EPSS-scored CVEs). GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 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: 0.2%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in the SAML broker component of Keycloak, an identity and access management solution. When configured as a SAML broker using the IdP-Initiated flow, Keycloak fails to enforce the OneTimeUse condition in SAML assertions. This allows an attacker who captures a valid, unused assertion to replay it multiple times. Successful exploitation could allow an attacker to hijack a user's session and gain unauthorized access to the system as that user.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
12th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 6, 2026

Last Modified

August 10, 2026

Advisory Details (2)

Auto-updated Aug 6, 2026
Patch available. Sources: redhat.
redhat

Bug Access Denied

https://bugzilla.redhat.com/show_bug.cgi?id=2511604
redhat Patch Available

CVE-2026-18967 - 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-2026-18967

Vendor Advisories for CVE-2026-18967(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 17× in last 7d / 84× 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 194 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-18967?
CVE-2026-18967 is a high vulnerability published on August 6, 2026. A flaw was found in the SAML broker component of Keycloak, an identity and access management solution. When configured as a SAML broker using the IdP-Initiated flow, Keycloak fails to enforce the OneTimeUse condition in SAML assertions. This allows an attacker who captures a valid, unused assertion…
When was CVE-2026-18967 disclosed?
CVE-2026-18967 was first published on August 6, 2026, with the most recent update on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18967 actively exploited?
CVE-2026-18967 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (12th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18967?
CVE-2026-18967 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-18967?
A fix for CVE-2026-18967 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-18967 are linked in the Vendor Advisories panel on this page.

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