CVE-2026-11931

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-06-15. a secondary CVSS source baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

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

Incorrect default permissions in Kiro IDE on macOS and Linux before version 0.11.133 could expose the authentication token cache file to other local users or processes via world-readable permissions (0644) instead of owner-restricted permissions (0600).

To remediate this issue, users should upgrade to Kiro IDE version 0.11.133 or later. After upgrading and restarting the application, the cache file permissions are automatically updated on the next token refresh. Users operating in a multi-user environment can invalidate existing tokens by reauthenticating.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: Track

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
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

June 15, 2026

Last Modified

June 16, 2026

Advisory Details (2)

Auto-updated Jun 15, 2026
No patch confirmed yet.
generic

MCP Registry Governance, Model Governance, and Document Attachments - Kiro

https://kiro.dev/changelog/ide/0-11/#patch-0-11-133
generic

CVE-2026-11931 - Insecure Permissions on Authentication Token Cache File in Kiro IDE

https://aws.amazon.com/security/security-bulletins/2026-045-aws/

Vendor Advisories for CVE-2026-11931(2)

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 13× in last 7d / 72× 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 146 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-11931?
CVE-2026-11931 is a medium vulnerability published on June 15, 2026. Incorrect default permissions in Kiro IDE on macOS and Linux before version 0.11.133 could expose the authentication token cache file to other local users or processes via world-readable permissions (0644) instead of owner-restricted permissions (0600). To remediate this issue, users should upgrade…
When was CVE-2026-11931 disclosed?
CVE-2026-11931 was first published in the National Vulnerability Database on June 15, 2026, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11931 actively exploited?
CVE-2026-11931 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 97.6% of all scored CVEs.
What is the CVSS score of CVE-2026-11931?
CVE-2026-11931 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-11931?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11931, 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

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