CVE-2020-12689

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 1.6% (74th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.6%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. Any user authenticated within a limited scope (trust/oauth/application credential) can create an EC2 credential with an escalated permission, such as obtaining admin while the user is on a limited viewer role. This potentially allows a malicious user to act as the admin on a project another user has the admin role on, which can effectively grant that user global admin privileges.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
45
EG Risk 45/100CISA 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
Severity88% × 45%
Exploitation2% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
1.6%
EPSS %ILE
74th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). 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

May 7, 2020

Last Modified

November 21, 2024

Advisory Details (5)

Auto-updated Aug 31, 2026
Patch available.
generic

OSSA-2020-004: Keystone credential endpoints allow owner modification and are not protected from a scoped context — OpenStack Security Advisories 0.0.1.dev388 documentation

https://security.openstack.org/ossa/OSSA-2020-004.html
generic
https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2%40%3Ccommits.druid.apache.org%3E
generic

Bug #1872735 “[OSSA-2020-004] EC2 and/or credential endpoints ar...” : Bugs : OpenStack Identity (keystone)

https://bugs.launchpad.net/keystone/+bug/1872735
generic

oss-security - Re: [OSSA-2020-004] Keystone: Keystone credential endpoints allow owner modification and are not protected from a scoped context (CVE PENDING)

http://www.openwall.com/lists/oss-security/2020/05/07/2
generic

oss-security - [OSSA-2020-004] Keystone: Keystone credential endpoints allow owner modification and are not protected from a scoped context (CVE PENDING)

https://www.openwall.com/lists/oss-security/2020/05/06/5

Patch Availability(5)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntupython-keystone (2:13.0.4-0ubuntu1) @ bionic2026-05-27ubuntu
redhatopenstack-keystone-1:10.0.3-8.el7ost2020-07-22redhat
redhatopenstack-keystone-1:15.0.1-0.20200512110437.95b2bbe.el8ost2020-07-22redhat
redhatopenstack-keystone-1:16.0.1-0.20200511063421.40cbb7b.el8ost2020-07-22redhat
redhatopenstack-keystone-1:13.0.4-3.el7ost2020-06-24redhat

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

(6 across 6 ecosystems)
Debian:10(1)
PackageVulnerable rangeFix by version rangeDependents
keystone2:14.0.1-2
  • every version up to 2:14.2.0-0+deb10u1: fixed in 2:14.2.0-0+deb10u1
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
keystone—
  • every version up to 2:17.0.0~rc2-1: fixed in 2:17.0.0~rc2-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
keystone—
  • every version up to 2:17.0.0~rc2-1: fixed in 2:17.0.0~rc2-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
keystone—
  • every version up to 2:17.0.0~rc2-1: fixed in 2:17.0.0~rc2-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
keystone—
  • every version up to 2:17.0.0~rc2-1: fixed in 2:17.0.0~rc2-1
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
keystone12.0.2 ... 15.0.0.0rc2 (12 versions)
  • every version up to 15.0.1: fixed in 15.0.1
  • 16.0.0 up to 16.0.1: fixed in 16.0.1
—

Weakness Classification(1)

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

All Vendor Advisories

(5)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 6× in last 7d / 26× 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 167 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Same vendor

3 shown

redhat:RHSA-2020:2732 · redhat:RHSA-2020:3102

Frequently asked(5)

What is CVE-2020-12689?
CVE-2020-12689 is a high vulnerability published on May 7, 2020. An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. Any user authenticated within a limited scope (trust/oauth/application credential) can create an EC2 credential with an escalated permission, such as obtaining admin while the user is on a limited viewer role. This potentially…
When was CVE-2020-12689 disclosed?
CVE-2020-12689 was first published on May 7, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-12689 actively exploited?
CVE-2020-12689 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.6% probability of exploitation in the next 30 days (74th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2020-12689?
CVE-2020-12689 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2020-12689?
A fix for CVE-2020-12689 is available: update to the fixed version the vendor names in its advisory.

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