CVE-2026-61466

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-06. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
9.1EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 9.1Exploit: None knownExposed services: Not assessed

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

In Apache CXF's OAuth2 Dynamic Client Registration endpoint, the authorization server accepts and stores the scope value supplied in the client registration request verbatim, without validating it against an AS-defined allowlist. This could lead to a client self-assigning privileged scopes at registration time. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
56
EG Risk 56/100CISA 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
Severity91% × 45%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.7%
EPSS %ILE
51st
KEV
Not listed

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

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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 7, 2026

Advisory Details (2)

Auto-updated Sep 16, 2026
No patch confirmed yet.
generic

oss-security - CVE-2026-61466: Apache CXF: OAuth2 Dynamic Client Registration Scope Self-Escalation

http://www.openwall.com/lists/oss-security/2026/08/06/21
generic
https://lists.apache.org/thread/2l1r16g79tpxd7fzrzr2q9oscwrjgljs

Vendor Advisories for CVE-2026-61466(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 25× in last 7d / 151× 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 384 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-61466?
CVE-2026-61466 is a critical vulnerability published on August 6, 2026. In Apache CXF's OAuth2 Dynamic Client Registration endpoint, the authorization server accepts and stores the scope value supplied in the client registration request verbatim, without validating it against an AS-defined allowlist. This could lead to a client self-assigning privileged scopes at…
When was CVE-2026-61466 disclosed?
CVE-2026-61466 was first published on August 6, 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-2026-61466 actively exploited?
CVE-2026-61466 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (51st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-61466?
CVE-2026-61466 has a CVSS v3.1 base score of 9.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-61466?
No fix for CVE-2026-61466 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-61466 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-61466

Explore →

Is Your Infrastructure Affected by CVE-2026-61466?

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

Book a Demo →Browse All CVEs