CVE-2026-59354

HIGHNVD 8.88.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.5% (40th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 6.1 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-08-27) is not newer than that change (2026-09-01), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 8.8Exploit: None knownExposed services: Not assessed

Upgrade to Spring Security 7.0.5 or later (from the CVE record's solution, VMware by Broadcom) — apply it.

In versions of Spring Security's OAuth2 Authorization Server module 7.0.0 through 7.0.4, when Dynamic Client Registration is explicitly enabled, the registration endpoint performs insufficient validation of certain client metadata fields supplied by the registering client. An attacker who possesses a valid Initial Access Token can register a malicious client with crafted metadata, which, depending on server configuration and how the metadata is later rendered or used, may result in Stored Cross-Site Scripting (XSS), Privilege Escalation, or Server-Side Request Forgery (SSRF).

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100

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 (value × EchelonGraph’s weight)
Severity88% × 45%
The EG Score, 8.8 of 10.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: Upgrade to Spring Security 7.0.5 or later (from the CVE record's solution, VMware by Broadcom). Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

Upgrade to Spring Security 7.0.5 or later (from the CVE record's solution, VMware by Broadcom). Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 27, 2026

Last Modified

September 1, 2026

Advisory Details (1)

Auto-updated Aug 28, 2026
Fix named in the CVE record's solution (VMware by Broadcom).
Web page

Spring Security Authorization Server Dynamic Client Registration endpoints perform insufficient validation of client metadata

https://spring.io/security/cve-2026-59354

Vendor Advisories for CVE-2026-59354(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 / 106× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 204 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 104 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  2. 2026-10-13 16:00 UTCEG score recompute
  3. 2026-10-13 16:00 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  4. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  5. 2026-10-12 15:52 UTCEG score recompute
  6. 2026-10-11 19:36 UTCEG score recompute
  7. 2026-10-11 16:51 UTCEG score recompute
  8. 2026-10-11 14:14 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  11. 2026-10-10 05:22 UTCEG score recompute
  12. 2026-10-10 05:22 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  13. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  14. 2026-10-09 03:11 UTCEG score recompute
  15. 2026-10-09 03:11 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  16. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  17. 2026-10-08 01:23 UTCEG score recompute
  18. 2026-10-08 01:23 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  19. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  20. 2026-10-07 06:49 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  21. 2026-10-06 19:15 UTCEG score recompute
  22. 2026-10-06 19:15 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  23. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  24. 2026-10-06 07:34 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  25. 2026-10-05 18:55 UTCEG score recompute
Show 75 more
  1. 2026-10-05 18:55 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  2. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  3. 2026-10-05 07:12 UTCEG score recompute
  4. 2026-10-05 07:12 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  5. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  6. 2026-10-04 19:39 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  7. 2026-10-04 06:54 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  8. 2026-10-03 19:21 UTCEG score recompute
  9. 2026-10-03 19:21 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  10. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  11. 2026-10-03 06:32 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  12. 2026-10-02 18:59 UTCEG score recompute
  13. 2026-10-02 18:59 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  14. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  15. 2026-10-02 07:26 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  16. 2026-10-01 19:54 UTCEG score recompute
  17. 2026-10-01 19:54 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  18. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  19. 2026-10-01 07:28 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  20. 2026-09-30 19:56 UTCEG score recompute
  21. 2026-09-30 19:56 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  22. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  23. 2026-09-30 05:08 UTCEG score recompute
  24. 2026-09-30 05:08 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  25. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  26. 2026-09-29 08:50 UTCEG score recompute
  27. 2026-09-29 08:50 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  28. 2026-09-28 21:17 UTCEG score recompute
  29. 2026-09-28 21:17 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  30. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  31. 2026-09-28 06:03 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  32. 2026-09-27 18:30 UTCEG score recompute
  33. 2026-09-27 18:30 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  34. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  35. 2026-09-27 06:55 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  36. 2026-09-26 19:21 UTCEG score recompute
  37. 2026-09-26 19:21 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  38. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  39. 2026-09-25 15:55 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  40. 2026-09-25 04:22 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  41. 2026-09-24 16:49 UTCEG score recompute
  42. 2026-09-24 16:49 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  43. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  44. 2026-09-24 05:16 UTCEG score recompute
  45. 2026-09-24 05:16 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  46. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  47. 2026-09-23 17:43 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  48. 2026-09-23 06:00 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  49. 2026-09-22 18:27 UTCEG score recompute
  50. 2026-09-22 18:27 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  51. 2026-09-22 06:42 UTCEG score recompute
  52. 2026-09-22 06:41 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  53. 2026-09-21 19:08 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  54. 2026-09-21 07:35 UTCEG score recompute
  55. 2026-09-21 07:35 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  56. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  57. 2026-09-20 19:54 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  58. 2026-09-20 08:21 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  59. 2026-09-19 19:23 UTCEG score recompute
  60. 2026-09-19 19:23 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  61. 2026-09-19 07:36 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  62. 2026-09-18 20:02 UTCEG score recompute
  63. 2026-09-18 20:01 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  64. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  65. 2026-09-18 08:28 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  66. 2026-09-17 20:55 UTCEG score recompute
  67. 2026-09-17 20:55 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  68. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  69. 2026-09-17 09:04 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  70. 2026-09-16 21:31 UTCEG score recompute
  71. 2026-09-16 21:31 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  72. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  73. 2026-09-16 09:16 UTCEG score recompute
  74. 2026-09-16 09:16 UTCGHSA enrichmentGHSA-j9pv-5342-rrx5 · GitHub CVSS 6.1
  75. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 38th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-59354?
CVE-2026-59354 is a high-severity vulnerability; its CVE record was published on August 27, 2026. In versions of Spring Security's OAuth2 Authorization Server module 7.0.0 through 7.0.4, when Dynamic Client Registration is explicitly enabled, the registration endpoint performs insufficient validation of certain client metadata fields supplied by the registering client. An attacker who possesses…
When was the CVE record for CVE-2026-59354 published?
The CVE record for CVE-2026-59354 was published on August 27, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 1, 2026; the record at its source may have been updated since.
Is CVE-2026-59354 actively exploited?
CVE-2026-59354 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59354?
CVE-2026-59354 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-59354?
The CVE record's solution for CVE-2026-59354, written by its CNA VMware by Broadcom, names the fix: "Upgrade to Spring Security 7.0.5 or later." The vendor advisories EchelonGraph has for CVE-2026-59354 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-59354

Explore →

Is Your Infrastructure Affected by CVE-2026-59354?

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

Book a Demo →Browse All CVEs