CVE-2026-59335

HIGHPre-NVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

Score 8.7 from GitHub Security Advisory (severity: HIGH) published 2026-08-25. A secondary CVSS source baseline 8.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.7EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 8.7Exploit: None knownExposed services: Not assessed

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

Improper handling of case sensitivity (CWE-178) in the identity zone authorization check in the Identity Zone Endpoint in Cloud Foundry UAA allows a remote authenticated attacker holding only the zones.write authority to bypass the intended restriction that this authority does not grant access to the privileged uaa (system) identity zone, by referring to the zone identifier in a non-lowercase form (e.g. UAA) in the request path and body. The authorization layer performs a case-sensitive comparison against the system zone identifier, while the underlying MySQL persistence layer resolves identifiers case-insensitively under its default collation, so the request is authorized incorrectly and is then resolved against the real system zone record. This allows the attacker to overwrite the system zone's JWT signing key with attacker-controlled key material, forge JWTs claiming the admin client and administrator scopes, and fully compromise UAA and any Cloud Foundry deployment that trusts it. This issue only affects UAA deployments backed by MySQL using its default collation; PostgreSQL and HSQLDB backends are not affected.

CVSS v3
8.7
EG Score
8.7HIGHmedium confidence
EG Risk
39
EG Risk 39/100CISA 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
Severity87% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* 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, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
42nd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* 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, and watch the vendor's advisory for the fix.

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 25, 2026

Last Modified

September 28, 2026

Advisory Details (1)

Auto-updated Aug 25, 2026
No fix on record yet.
generic

CVE-2026-59335 - UAA case insensitive check bypass | Cloud Foundry

https://www.cloudfoundry.org/blog/cve-2026-59335-uaa-case-insensitive-check-bypass/

Vendor Advisories for CVE-2026-59335(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 23× in last 7d / 105× 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 168 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-59335?
CVE-2026-59335 is a high vulnerability published on August 25, 2026. Improper handling of case sensitivity (CWE-178) in the identity zone authorization check in the Identity Zone Endpoint in Cloud Foundry UAA allows a remote authenticated attacker holding only the zones.write authority to bypass the intended restriction that this authority does not grant access to…
When was CVE-2026-59335 disclosed?
CVE-2026-59335 was first published on August 25, 2026, with the most recent update on September 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59335 actively exploited?
CVE-2026-59335 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (42nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59335?
CVE-2026-59335 has a CVSS base score of 8.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-59335?
No fix for CVE-2026-59335 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-2026-59335 are linked in the Vendor Advisories panel on this page.

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