CVE-2026-43001

HIGHNVD 8.07.9▼
EchelonGraph scoreMEDIUM confidence

Score 7.9 from GitHub Security Advisory (severity: HIGH) published 2026-05-01. NVD baseline CVSS 8.0; sources differ by 0.1.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.0
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.0Exploit: NoneExposed: 0

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

An issue was discovered in OpenStack Keystone before 29.0.2. POST /v3/credentials did not validate that the caller-supplied project_id for an EC2-type credential matched the project of the authenticating application credential. This allowed an attacker holding an unrestricted application credential for project A to create an EC2 credential targeting project B; a subsequent /v3/ec2tokens exchange would then issue a Keystone token scoped to project B while still carrying the original app_cred_id, enabling cross-project lateral movement within the credential owner's role footprint.

CVSS v3
8.0
EG Score
7.9(medium)
EPSS
35.9%
KEV
Not listed

Published

May 1, 2026

Last Modified

June 30, 2026

Advisory Details (2)

Auto-updated May 1, 2026
No patch confirmed yet.
generic
https://review.opendev.org/c/openstack/keystone/+/985804
generic

Bug #2149775 “Generic EC2 credential creation allows application...” : Bugs : OpenStack Identity (keystone)

https://bugs.launchpad.net/keystone/+bug/2149775

Vendor Advisories for CVE-2026-43001(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
pipkeystone—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
keystone13.0.2 ... 29.0.1 (59 versions)——

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 39× 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 119 total refreshes for this CVE.

  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-09 19:10 UTCEPSS rescore
  3. 2026-07-08 15:16 UTCEPSS rescore
  4. 2026-07-07 13:46 UTCEPSS rescore
  5. 2026-07-06 16:27 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 06:31 UTCEPSS rescore
  10. 2026-07-01 15:06 UTCEPSS rescore
  11. 2026-06-30 23:22 UTCEPSS rescore
  12. 2026-06-29 14:06 UTCEPSS rescore
  13. 2026-06-28 14:07 UTCEPSS rescore
  14. 2026-06-28 04:56 UTCEPSS rescore
  15. 2026-06-27 03:08 UTCEPSS rescore
  16. 2026-06-25 13:49 UTCEPSS rescore
  17. 2026-06-25 13:49 UTCEPSS rescore
  18. 2026-06-24 14:05 UTCEPSS rescore
  19. 2026-06-23 21:33 UTCEPSS rescore
  20. 2026-06-22 14:25 UTCEPSS rescore
  21. 2026-06-22 14:25 UTCEPSS rescore
  22. 2026-06-21 14:56 UTCEPSS rescore
  23. 2026-06-21 14:56 UTCEPSS rescore
  24. 2026-06-21 01:59 UTCEPSS rescore
  25. 2026-06-19 19:25 UTCEPSS rescore
Show 75 more
  1. 2026-06-18 17:52 UTCEPSS rescore
  2. 2026-06-18 17:52 UTCEPSS rescore
  3. 2026-06-17 17:53 UTCEPSS rescore
  4. 2026-06-16 17:52 UTCEPSS rescore
  5. 2026-06-15 17:49 UTCEPSS rescore
  6. 2026-06-14 21:38 UTCEG score recompute
  7. 2026-06-14 21:38 UTCGHSA enrichment
  8. 2026-06-14 09:12 UTCEG score recompute
  9. 2026-06-14 09:12 UTCGHSA enrichment
  10. 2026-06-13 23:00 UTCEPSS rescore
  11. 2026-06-12 23:12 UTCEPSS rescore
  12. 2026-06-12 23:12 UTCEPSS rescore
  13. 2026-06-12 05:52 UTCEG score recompute
  14. 2026-06-12 05:52 UTCGHSA enrichment
  15. 2026-06-11 17:27 UTCEG score recompute
  16. 2026-06-11 17:26 UTCGHSA enrichment
  17. 2026-06-11 14:00 UTCEPSS rescore
  18. 2026-06-11 04:42 UTCEG score recompute
  19. 2026-06-11 04:42 UTCGHSA enrichment
  20. 2026-06-10 22:18 UTCEPSS rescore
  21. 2026-06-10 13:22 UTCEPSS rescore
  22. 2026-06-10 13:22 UTCEPSS rescore
  23. 2026-06-10 12:49 UTCEG score recompute
  24. 2026-06-10 12:49 UTCGHSA enrichment
  25. 2026-06-10 00:24 UTCEG score recompute
  26. 2026-06-10 00:24 UTCGHSA enrichment
  27. 2026-06-09 11:58 UTCEG score recompute
  28. 2026-06-09 11:58 UTCGHSA enrichment
  29. 2026-06-08 23:33 UTCEG score recompute
  30. 2026-06-08 23:33 UTCGHSA enrichment
  31. 2026-06-08 23:31 UTCNVD updateCVSS v3 → 8
  32. 2026-06-08 14:17 UTCEPSS rescore
  33. 2026-06-08 14:17 UTCEPSS rescore
  34. 2026-06-08 04:33 UTCEG score recompute
  35. 2026-06-08 04:33 UTCGHSA enrichment
  36. 2026-06-07 16:08 UTCEG score recompute
  37. 2026-06-07 16:08 UTCGHSA enrichment
  38. 2026-06-07 15:25 UTCEPSS rescore
  39. 2026-06-07 15:25 UTCEPSS rescore
  40. 2026-06-07 03:42 UTCEG score recompute
  41. 2026-06-07 03:42 UTCGHSA enrichment
  42. 2026-06-06 15:14 UTCEG score recompute
  43. 2026-06-06 15:14 UTCGHSA enrichment
  44. 2026-06-06 13:47 UTCEPSS rescore
  45. 2026-06-06 13:47 UTCEPSS rescore
  46. 2026-06-06 02:48 UTCEG score recompute
  47. 2026-06-06 02:48 UTCGHSA enrichment
  48. 2026-06-06 02:48 UTCEG score recompute
  49. 2026-06-06 02:48 UTCGHSA enrichment
  50. 2026-06-05 22:47 UTCEPSS rescore
  51. 2026-06-05 14:11 UTCEG score recompute
  52. 2026-06-05 14:11 UTCGHSA enrichment
  53. 2026-06-05 06:10 UTCEPSS rescore
  54. 2026-06-05 06:10 UTCEPSS rescore
  55. 2026-06-05 01:45 UTCEG score recompute
  56. 2026-06-05 01:45 UTCGHSA enrichment
  57. 2026-06-04 13:12 UTCEPSS rescore
  58. 2026-06-04 13:12 UTCEPSS rescore
  59. 2026-06-04 13:06 UTCEG score recompute
  60. 2026-06-04 13:06 UTCGHSA enrichment
  61. 2026-06-04 00:39 UTCEG score recompute
  62. 2026-06-04 00:39 UTCGHSA enrichment
  63. 2026-06-03 12:13 UTCEG score recompute
  64. 2026-06-03 12:13 UTCGHSA enrichment
  65. 2026-06-02 23:47 UTCEG score recompute
  66. 2026-06-02 23:47 UTCGHSA enrichment
  67. 2026-06-02 20:13 UTCEPSS rescore
  68. 2026-06-02 11:21 UTCEG score recompute
  69. 2026-06-02 11:21 UTCGHSA enrichment
  70. 2026-06-01 22:55 UTCEG score recompute
  71. 2026-06-01 22:55 UTCGHSA enrichment
  72. 2026-06-01 13:52 UTCEPSS rescore
  73. 2026-06-01 13:52 UTCEPSS rescore
  74. 2026-06-01 10:30 UTCEG score recompute
  75. 2026-06-01 10:30 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-43001?
CVE-2026-43001 is a high vulnerability published on May 1, 2026. An issue was discovered in OpenStack Keystone before 29.0.2. POST /v3/credentials did not validate that the caller-supplied projectid for an EC2-type credential matched the project of the authenticating application credential. This allowed an attacker holding an unrestricted application credential…
When was CVE-2026-43001 disclosed?
CVE-2026-43001 was first published in the National Vulnerability Database on May 1, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43001 actively exploited?
CVE-2026-43001 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 35.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43001?
CVE-2026-43001 has a CVSS v3 base score of 8.0 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.9.
How do I remediate CVE-2026-43001?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43001, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-43001

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